diff --git a/generic_data/defaultValues.json b/generic_data/defaultValues.json
new file mode 100644
index 0000000..79669cf
--- /dev/null
+++ b/generic_data/defaultValues.json
@@ -0,0 +1,195 @@
+{
+    "plot":{
+        "file":{
+            "format":"PNG",
+            "output":"INTERACTIVE",
+            "oneFilePerInterval":false
+        },
+        "tree":{
+            "fullView":false
+        },
+        "page":{
+            "xMargin":5,
+            "yMargin":5,
+            "mode":"color",
+            "orientation":"landscape",
+            "dimension":"ISO A4",
+            "title":{
+                "position":"top",
+                "alignment":" center",
+                "color":"#000000"
+            },
+            "font":{
+                "name":"sans-serif",
+                "size":"8"
+            },
+            "layout":{
+                "type":"vertical",
+                "panelHeight":0.5,
+                "panelSpacing":0,
+                "expand":false,
+                "timeAxesLegend":true
+            }
+        },
+        "panel":{
+            "plotType":"timePlot",
+            "isotropic":false,
+            "title":{
+                "position":"top",
+                "alignment":" center",
+                "color":"#000000"
+            },
+            "font":{
+                "name":"sans-serif",
+                "size":"8"
+            },
+            "backgroundColor":"none",
+            "status":{
+                "position":"top",
+                "colorMap":0
+            }
+        },
+        "axis":{
+            "scale":"linear",
+            "tickPosition":"outwards",
+            "color":"#000000",
+            "thickness":"1",
+            "legend":{
+                "color":"#000000",
+                "font":{
+                    "name":"sans-serif",
+                    "size":"8"
+                }
+            },
+            "timeFormat":"dd/mm/yy",
+            "colorMap":"1"
+        },
+        "serie":{
+            "yAxis":"y-left",
+            "resolution":3000,
+            "lines":{
+                "style":"plain",
+                "width":1,
+                "color":"auto"
+            },
+            "symbols":{
+                "type":"dot",
+                "size":3,
+                "color":"auto"
+            },
+            "resamplingMode":"xparam",
+            "timetick":{
+                "type":"auto",
+                "step":3600,
+                "nbmajor":5,
+                "nbminor":5,
+                "color":"#FF0000",
+                "symbols":{
+                    "type":"full-circle",
+                    "size":10,
+                    "color":"#FF0000"
+                },
+                "firstsymbols":{
+                    "type":"triangle",
+                    "size":4,
+                    "color":"#00FF00"
+                },
+                "font":{
+                    "name":"sans-serif",
+                    "size":"8"
+                }
+            },
+            "intervaltick":{
+                "mode":"start-time",
+                "color":"#FF0000",
+                "symbols":{
+                    "type":"full-circle",
+                    "size":10,
+                    "color":"#FF0000"
+                },
+                "font":{
+                    "name":"sans-serif",
+                    "size":"8"
+                }
+            },
+            "errorbar":{
+                "type":"min-max",
+                "lines":{
+                    "style":"plain",
+                    "width":1,
+                    "color":"auto"
+                }
+            },
+            "projection":"XY"
+        },
+        "spectro":{
+            "yAxis":"y-left",
+            "resolution":3000
+        },
+        "histogram2D":{
+            "histo2DFunction":"density",
+            "xbinnumber":100,
+            "ybinnumber":100,
+            "smoothfactor":1
+            },
+        "sauvaud":{
+            "yAxis":"y-right",
+            "resolution":3000
+        },
+        "intervals":{
+            "color":"#FF0000"
+        },
+        "statusbar":{
+            "color":"#FF0000"
+        },
+        "legends":{
+            "series":{
+                "type":"text-only",
+                "position":"outside",
+                "text":{
+                    "color":"#000000"
+                },
+                "border":{"color":"#000000"},
+                "intervalinfo":{"type":"start-stop"},
+                "font":{"name":"sans-serif","size":"8"}
+            },
+            "text":{
+                "position":"left",
+                "color":"#000000",
+                "font":{
+                    "name":"sans-serif",
+                    "size":"8"
+                }
+            }
+        },
+        "constants":{
+            "axisId":"y-left",
+            "line":{
+                "style":"plain",
+                "width":1,
+                "color":"#000000"
+            }
+        },
+        "textObjs":{
+            "yAxisId":"y-left",
+            "xRelative":true,
+            "yRelative":true,
+            "align":"left",
+            "color":"#000000",
+            "font":{"name":"sans-serif","size":"8"}
+        },
+        "curves":{
+            "line":{
+                "style":"plain",
+                "width":1,
+                "color":"#000000"
+            }
+        },
+        "fills":{
+            "type":"serie-constant",
+            "greaterColor":"none",
+            "lessColor":"none"
+        },
+        "filtering":{"level":1}
+    }
+}
\ No newline at end of file
diff --git a/js/app/AmdaApp.js b/js/app/AmdaApp.js
index 0e6c83b..2c44792 100755
--- a/js/app/AmdaApp.js
+++ b/js/app/AmdaApp.js
@@ -13,6 +13,7 @@ Ext.define('amdaApp.AmdaApp', {
 	requires: [
 		'Ext.window.MessageBox',
 		'Ext.ux.desktop.ShortcutModel',
+		'amdaUI.DefaultValuesWindow',
 		'amdaUI.SampToolBarUI',
 		'amdaDesktop.DynamicModule',
 		'MyDesktop.Settings'
@@ -417,8 +418,12 @@ Ext.define('amdaApp.AmdaApp', {
 					{
 						text : 'Workspaces',
 						iconCls : 'icon-ws',
-						disabled: true,
-						scope : this
+						disabled: false,
+						scope : this,
+						handler:function(obj, e){
+							e.stopEvent();
+							Ext.create('amdaUI.DefaultValuesWindow').show();
+						}
 					}, '-', 
 					{
 						text : 'Logout',
diff --git a/js/app/models/DefaultValues.js b/js/app/models/DefaultValues.js
new file mode 100644
index 0000000..2ee6765
--- /dev/null
+++ b/js/app/models/DefaultValues.js
@@ -0,0 +1,44 @@
+Ext.define('amdaModel.DefaultValues', {
+  singleton: true,
+  type:null,
+  userValues:'',
+
+  constructor: function() {
+    this.getDefaultValues();
+  },
+
+  getDefaultValues: function(){
+    var me = this;
+
+    Ext.Ajax.request({
+      url: 'generic_data/defaultValues.json',
+      method: 'GET',
+      success: function(response) {
+        me.values = Ext.decode(response.responseText);
+        
+        // after reading generic default values, we read user defaults.
+        Ext.Ajax.request({
+          url: 'data/'+ sessionID +'/userDefaults.json',
+          method: 'GET',
+          success: function(response) {
+            me.userValues = Ext.decode(response.responseText);
+            Ext.Object.each(me.userValues, function(key,value){
+              var keys = key.split('_');
+              var obj = me.values;
+              for (var i = 0; i < keys.length - 1; i++) {
+                  obj = obj[keys[i]];
+              }
+              obj[keys[keys.length - 1]] = value;
+              })
+          },
+          failure:function(){
+            // Maybe create the file ?
+          }
+        });
+      },
+      failure: function(response) {
+        console.error('Failed to load default values', response);
+      }
+    });
+  },
+});
\ No newline at end of file
diff --git a/js/app/models/DefaultValuesModel.js b/js/app/models/DefaultValuesModel.js
new file mode 100644
index 0000000..b34a222
--- /dev/null
+++ b/js/app/models/DefaultValuesModel.js
@@ -0,0 +1,10 @@
+Ext.define('amdaModel.DefaultValuesModel', {
+    extend: 'Ext.data.TreeModel',
+    fields: [{
+        name: 'parameter',
+        type: 'string'
+    }, {
+        name: 'value',
+        type: 'string'
+    }]
+});
\ No newline at end of file
diff --git a/js/app/models/PlotObjects/PlotObjectConfig.js b/js/app/models/PlotObjects/PlotObjectConfig.js
index 6dc0f86..1a9d29d 100644
--- a/js/app/models/PlotObjects/PlotObjectConfig.js
+++ b/js/app/models/PlotObjects/PlotObjectConfig.js
@@ -15,213 +15,13 @@
 
 Ext.define('amdaPlotObj.PlotObjectConfig', {
 	singleton: true,
+	requires:['amdaModel.DefaultValues'],
 
-	defaultValues: {
-		file: {
-			format: 'PNG',
-			output: 'INTERACTIVE',
-			oneFilePerInterval: false
-		},
-		tree: {
-			fullView: false
-		},
-		page: {
-			xMargin: 5.,
-			yMargin: 5.,
-			mode: 'color',
-			orientation: 'landscape',
-			dimension: 'ISO A4',
-			title: {
-				position: 'top',
-				alignment: ' center',
-				color: '#000000'
-			},
-			font: {
-				name: 'sans-serif',
-				size: '8'
-			},
-			layout: {
-				type: 'vertical',
-				panelHeight: 0.5,
-				panelSpacing: 0.,
-				expand: false,
-				timeAxesLegend: true
-			}
-		},
-		panel: {
-			plotType: 'timePlot',
-			isotropic: false,
-			title: {
-				position: 'top',
-				alignment: ' center',
-				color: '#000000'
-			},
-			font: {
-				name: 'sans-serif',
-				size: '8'
-			},
-			backgroundColor: 'none',
-			status: {
-				position: 'top',
-				colorMap: 0
-			}
-		},
-		axis: {
-			scale: 'linear',
-			tickPosition: 'outwards',
-			color: '#000000',
-			thickness: '1',
-			legend: {
-				color: '#000000',
-				font: {
-					name: 'sans-serif',
-					size: '8'
-				}
-			},
-			timeFormat: 'dd/mm/yy',
-			colorMap: '1'
-		},
-		serie: {
-			yAxis: 'y-left',
-			resolution: 3000,
-			lines: {
-				style: 'plain',
-				width: 1,
-				color: 'auto'
-			},
-			symbols: {
-				type: 'dot',
-				size: 3,
-				color: 'auto'
-			},
-			resamplingMode: 'xparam',
-			timetick: {
-				type: 'auto',
-				step: 3600,
-				nbmajor: 5,
-				nbminor: 5,
-				color: '#FF0000',
-				symbols: {
-					type: 'full-circle',
-					size: 10,
-					color: '#FF0000'
-				},
-				firstsymbols: {
-					type: 'triangle',
-					size: 4,
-					color: '#00FF00'
-				},
-				font: {
-					name: 'sans-serif',
-					size: '8'
-				}
-			},
-			intervaltick: {
-				mode: 'start-time',
-				color: '#FF0000',
-				symbols: {
-					type: 'full-circle',
-					size: 10,
-					color: '#FF0000'
-				},
-				font: {
-					name: 'sans-serif',
-					size: '8'
-				}
-			},
-			errorbar: {
-				type: 'min-max',
-				lines: {
-					style: 'plain',
-					width: 1,
-					color: 'auto'
-				}
-			},
-			projection: 'XY',
-		},
-		spectro: {
-			yAxis: 'y-left',
-			resolution: 3000
-		},
-		histogram2D:{
-			histo2DFunction: 'density',
-			xbinnumber: 100,
-			ybinnumber: 100,
-			smoothfactor: 1,
-		},
-		sauvaud: {
-			yAxis: 'y-right',
-			resolution: 3000
-		},
-		intervals: {
-			color: "#FF0000"
-		},
-		statusbar: {
-			color: "#FF0000"
-		},
-		legends: {
-			series: {
-				type: 'text-only',
-				position: 'outside',
-				text: {
-					color: '#000000'
-				},
-				border: {
-					color: '#000000'
-				},
-				intervalinfo: {
-					type: 'start-stop'
-				},
-				font: {
-					name: 'sans-serif',
-					size: '8'
-				}
-			},
-			text: {
-				position: 'left',
-				color: '#000000',
-				font: {
-					name: 'sans-serif',
-					size: '8'
-				}
-			}
-		},
-		constants: {
-			axisId: 'y-left',
-			line: {
-				style: 'plain',
-				width: 1,
-				color: '#000000'
-			}
-		},
-		textObjs: {
-			yAxisId: 'y-left',
-			xRelative: true,
-			yRelative: true,
-			align: 'left',
-			color: '#000000',
-			font: {
-				name: 'sans-serif',
-				size: '8'
-			}
-		},
-		curves: {
-			line: {
-				style: 'plain',
-				width: 1,
-				color: '#000000'
-			}
-		},
-		fills: {
-			type: 'serie-constant',
-			greaterColor: 'none',
-			lessColor: 'none'
-		},
-		filtering: {
-			level: 1
-		}
+	defaultValues: null,
+	
+	constructor: function(){
+		this.defaultValues = amdaModel.DefaultValues.values.plot;
 	},
-
 	getValueByKey: function (dataList, key) {
 		var value = '';
 		Ext.each(dataList, function (data) {
diff --git a/js/app/models/PlotObjects/PlotSauvaudObject.js b/js/app/models/PlotObjects/PlotSauvaudObject.js
index 92fa79d..15ee4a9 100644
--- a/js/app/models/PlotObjects/PlotSauvaudObject.js
+++ b/js/app/models/PlotObjects/PlotSauvaudObject.js
@@ -32,10 +32,10 @@ Ext.define('amdaPlotObj.PlotSauvaudObject', {
         { name: 'filtering-level', type: 'int' },
         { name: 'right_dim', type: 'int' },
 
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.name, type: 'boolean' },
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.type.key, type: 'string' },
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.key, type: 'string' },
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.dimkey, type: 'string' }
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.name, type: 'boolean' },
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.type.key, type: 'string' },
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.key, type: 'string' },
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.dimkey, type: 'string' }
     ],
 
     constructor: function () {
diff --git a/js/app/models/PlotObjects/PlotSpectroObject.js b/js/app/models/PlotObjects/PlotSpectroObject.js
index 3b76bc7..4bd0a60 100644
--- a/js/app/models/PlotObjects/PlotSpectroObject.js
+++ b/js/app/models/PlotObjects/PlotSpectroObject.js
@@ -31,10 +31,10 @@ Ext.define('amdaPlotObj.PlotSpectroObject', {
         { name: 'filtering-activated', type: 'boolean' },
         { name: 'filtering-level', type: 'int' },
 
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.name, type: 'boolean' },
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.type.key, type: 'string' },
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.key, type: 'string' },
-        { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.dimkey, type: 'string' }
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.name, type: 'boolean' },
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.type.key, type: 'string' },
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.key, type: 'string' },
+        // { name: amdaPlotObj.PlotObjectConfig.bgSubstraction.value.dimkey, type: 'string' }
     ],
 
     constructor: function () {
diff --git a/js/app/views/DefaultTreeGrid.js b/js/app/views/DefaultTreeGrid.js
new file mode 100644
index 0000000..e9824c4
--- /dev/null
+++ b/js/app/views/DefaultTreeGrid.js
@@ -0,0 +1,191 @@
+Ext.define('StatusColorPicker', {
+    extend: 'Ext.form.field.Picker',
+    alias: 'widget.statuscolorpicker',
+    availableColorsNew: [
+		"#000000", "#0000ff", "#ff0000", "#00ffff", "#ff00ff", "#008000", "#800000",
+		"#000080", "#808000", "#800080", "#c0c0c0", "#008080", "#ffff00", "#004040",
+		"#29d8d7", "#6b9842", "#73a9b4", "#1c883d", "#808080", "#4342dd", "#e84130",
+		"#dee2e6", "#ced4da", "#adb5bd", "#868e96", "#495057", "#343a40", "#212529",
+		"#ffa8a8", "#ff8787", "#ff6b6b", "#fa5252", "#f03e3e", "#e03131", "#c92a2a",
+		"#faa2c1", "#f783ac", "#f06595", "#e64980", "#d6336c", "#c2255c", "#a61e4d",
+		"#e599f7", "#da77f2", "#cc5de8", "#be4bdb", "#ae3ec9", "#9c36b5", "#862e9c",
+		"#b197fc", "#9775fa", "#845ef7", "#7950f2", "#7048e8", "#6741d9", "#5f3dc4",
+		"#91a7ff", "#748ffc", "#5c7cfa", "#4c6ef5", "#4263eb", "#3b5bdb", "#364fc7",
+		"#74c0fc", "#4dabf7", "#339af0", "#228be6", "#1c7ed6", "#1971c2", "#1864ab",
+		"#66d9e8", "#3bc9db", "#22b8cf", "#15aabf", "#1098ad", "#0c8599", "#0b7285",
+		"#63e6be", "#38d9a9", "#20c997", "#12b886", "#0ca678", "#099268", "#087f5b",
+		"#8ce99a", "#69db7c", "#51cf66", "#40c057", "#37b24d", "#2f9e44", "#2b8a3e",
+		"#c0eb75", "#a9e34b", "#94d82d", "#82c91e", "#74b816", "#66a80f", "#5c940d",
+		"#ffe066", "#ffd43b", "#fcc419", "#fab005", "#f59f00", "#f08c00", "#e67700",
+		"#ffc078", "#ffa94d", "#ff922b", "#fd7e14", "#f76707", "#e8590c", "#d9480f"
+	],
+    toUpper : function(x){ 
+        return x.toUpperCase();
+    },
+    replaceColor : function(x){
+        return x.replace("#","");
+    },
+    createPicker: function() {
+        var me = this;
+        return Ext.create('Ext.picker.Color', {
+            pickerField: me,
+            renderTo: Ext.getBody(),
+            floating: true,
+            minWidth: 133,
+            maxWidth: 200,
+            minHeight: 225,
+            autoScroll:true,
+            focusOnShow: true,
+            colors: this.availableColorsNew.map(this.replaceColor).map(this.toUpper),
+            listeners: {
+                select: function(picker, color) {
+                    me.setValue('#'+color);
+                    me.picker.hide();
+                },
+                scope: me
+            }
+        });
+    }
+});
+
+Ext.define('amdaUI.DefaultTreeGrid', {
+    extend: 'Ext.tree.Panel',
+    
+    requires: [
+        'Ext.data.*',
+        'Ext.grid.*',
+        'Ext.tree.*',
+        'amdaModel.DefaultValuesModel',
+        'StatusColorPicker'
+    ],    
+    xtype: 'tree-grid',
+    
+    reserveScrollbar: true,
+    
+    height: 300,
+    useArrows: true,
+    rootVisible: false,
+    multiSelect: true,
+    singleExpand: true,
+
+    constructor: function() {
+		this.init();
+		this.callParent();
+	},
+
+    isHexCode: function(str) {
+        return /^#[0-9a-fA-F]{6}$/.test(str);
+    },
+    init: function() {
+        var me = this;
+        me.cellEditing = Ext.create('Ext.grid.plugin.CellEditing', {clicksToEdit: 1,
+            listeners:{
+                beforeedit:function(editor, context,e){
+                    if(!context.record.data.leaf)
+                    {
+                        return false;
+                    }
+                    var value = context.record.get(context.field);
+                    if (me.isHexCode(value)) {
+                        var colorPicker = Ext.create('StatusColorPicker', {
+                            pickerField: context.field,
+                            value: value,
+                            listeners: {
+                                select: function(picker, color) {
+                                    context.record.set(context.field, '#' + color);
+                                    me.getView().refresh();
+                                }
+                            }
+                        });
+                        editor.field = colorPicker;
+                    }
+                }
+            }
+        });
+        
+        AmdaAction.getDefaultValueTree(function(res,e) {
+            console.log(res);
+        }); 
+
+        Ext.apply(this, {
+            store: new Ext.data.TreeStore({
+                model: amdaModel.DefaultValuesModel,
+                proxy: {
+                    type: 'direct',
+                    directFn: AmdaAction.getDefaultValueTree		   
+				},
+                folderSort: true
+            }),
+            plugins: [me.cellEditing],
+            columns: [{
+                xtype: 'treecolumn', //this is so we know which column will show the tree
+                text: 'Parameters',
+                flex: 2,
+                sortable: true,
+                dataIndex: 'parameter'
+            },{
+                xtype: 'gridcolumn',
+                getEditor: function(record) {
+                    var grid = this.up().grid,
+                        cellediting = grid.findPlugin('cellediting'),
+                        editors = cellediting.editors,
+                        editor = editors.getByKey(this.id),
+                        fieldType;
+                    
+                    if (editor) {
+                        // Do this to avoid memory leaks
+                        editors.remove(editor);
+                    }
+                    value = record.get('value');
+                    if(me.isHexCode(value)){
+                        fieldType = 'statuscolorpicker'
+                    }
+                    else if(value === 'true' || value == 'false'){
+                        fieldType = 'combobox'
+                    }
+                    else{
+                        fieldType = isNaN(parseFloat(record.get('value'))) ? 'textfield' : 'numberfield';
+                    }
+                    return {
+                        xtype: fieldType,
+                        store: (fieldType=='combobox') ? [[true, 'true'], [false, 'false']] : null,
+                        editable: false,
+                        value: (fieldType=='combobox') ? value : null,
+                        allowBlank: false
+                    };
+                },
+                text: 'Values',
+                flex: 1,
+                sortable: true,
+                dataIndex: 'value',
+                align: 'center',
+                renderer: function(value, meta) {
+                    if (me.isHexCode(value)){
+                        value = value.substring(1, 7);
+                        return '<div style="background-color:#' + value + '; margin-left: auto; \
+                            margin-right: auto;width:15px;height:15px;"></div>';
+                    }
+                    else{
+                        return value;
+                    }
+                },
+            },{
+                text: 'Reset',
+                width: 55,
+                menuDisabled: true,
+                xtype: 'actioncolumn',
+                tooltip: 'Reset to the default value',
+                align: 'center',
+                icon: 'js/resources/images/16x16/arrow_circle_double.png',
+                handler: function(grid, rowIndex, colIndex, actionItem, event, record, row) {
+                    Ext.Msg.alert('Editing' + record.get('parameter'));
+                },
+                // Only leaf level tasks may be edited
+                isDisabled: function(view, rowIdx, colIdx, item, record) {
+                    return !record.data.leaf;
+                }
+            }
+            ]
+        });
+    }
+});
diff --git a/js/app/views/DefaultValuesWindow.js b/js/app/views/DefaultValuesWindow.js
new file mode 100644
index 0000000..99d29d3
--- /dev/null
+++ b/js/app/views/DefaultValuesWindow.js
@@ -0,0 +1,93 @@
+
+
+Ext.define('amdaUI.DefaultValuesWindow',{
+    extend: 'Ext.window.Window',
+    alias: 'widget.defaultvalueswindow',
+
+    requires:[
+        'amdaUI.DefaultTreeGrid',
+    ],
+    defaultValuesGrid: null,
+    constructor:function(){
+        this.defaultValuesGrid = Ext.create('amdaUI.DefaultTreeGrid');
+        this.init();
+		this.callParent();
+    },
+
+    init:function(config){
+
+        var me=this;
+        Ext.apply(this,  {
+            title: 'Default Values Grid',
+            width: 350,
+            height: 380,
+            closable:false,
+            modal:true,
+            resizable: false,
+            items: [
+                {
+                    xtype: 'form',
+                    renderTo: Ext.getBody(),
+                    layout:'hbox',
+                    frame: false,
+                    items: [
+                    {
+                        flex:1,
+                        items:[me.defaultValuesGrid],
+                    },
+                ],
+
+                    buttons: [{
+                        text: 'Save',
+                        handler: function() {
+
+                            // Check to be sure that max > min
+
+                            // if(config.type != "cat"){
+                            //     var records = me.statusGrid.store.getRange();
+                            //     for (var i = 0; i < records.length; i++) {
+                            //         var record = records[i];
+                            //         if (record.get('maxVal') < record.get('minVal')) {
+                            //             invalidRecord = record;
+                            //             break;
+                            //         }
+                            //     }
+                            //     if (invalidRecord) {
+                            //         Ext.Msg.alert('Error', 'Max value must be greater than Min value', function() {
+                            //             me.statusGrid.cellEditing.startEditByPosition({row: invalidRecord, column: 0});
+                            //             invalidRecord = null;
+                            //         });
+                            //         return;
+                            //     }
+                            // }
+
+                            // // Saving part
+                            
+                            // config.object.set('status',me.statusGrid.getStatusString());
+                            // me.statusGrid.clearStore();
+                            // me.close();
+                        },
+                    },
+                    {
+                        // to reset the form
+                        text: 'Reset',
+                        handler: function() {
+                            // me.statusGrid.clearStore();
+                            // me.statusGrid.parseStatus(config.status);
+                        }
+                    },
+                    {
+                        // To quit the window
+                        text: 'Cancel',
+                        handler: function() {
+                            // me.statusGrid.clearStore();
+                            // me.statusGrid.destroy();
+                            me.close();
+                        }
+                    }]
+                }
+            ]
+        });
+    }
+});
+
diff --git a/php/classes/AmdaAction.php b/php/classes/AmdaAction.php
index f0fe36d..d6bfb76 100644
--- a/php/classes/AmdaAction.php
+++ b/php/classes/AmdaAction.php
@@ -1694,5 +1694,55 @@ class AmdaAction
 		$cacheMgr = new CatalogCacheMgr();
 		return $cacheMgr->editColumn($id,$name, $type,$size,$description);
 	}
+
+	public function getNodeValues($data,&$transformed){
+		$iconCls = "task-folder";
+		$expanded = true;
+		foreach ($data as $parameter => $value) {
+			if(is_array($value)){
+				$child = [
+					"parameter" => $parameter,
+					"value" => "",
+					"iconCls" => $iconCls,
+					"expanded" => false,
+					"children" => []
+				];
+				$this->getNodeValues($value,$child['children']);
+				$transformed[] = $child;
+			}
+			else{
+				$child =[
+					"parameter" => $parameter,
+					"value" => $value,
+					"iconCls" => "task",
+					"leaf" => true
+				];
+
+				$transformed[] = $child;
+			}
+		}
+	}
+
+	public function getDefaultValueTree(){
+		$childrenToReturn = array();
+		$children = [];
+		if (file_exists(DATAPATH.'defaultValues.json')) {
+			$json_o = json_decode(file_get_contents(DATAPATH.'defaultValues.json'), true);
+			if (empty($json_o)) {
+				$childrenToReturn = array();
+			}
+			else {
+				$this->getNodeValues($json_o,$children);
+				$childrenToReturn = [
+					"text" => ".",
+					"children" => $children
+				];
+			}
+		}
+		else {
+			$childrenToReturn = array();
+		}
+		return $childrenToReturn;
+	}
 }
 ?>
diff --git a/php/config.php b/php/config.php
index e182765..86736f5 100644
--- a/php/config.php
+++ b/php/config.php
@@ -205,7 +205,9 @@ $API = array(
 			'deleteColumn' => array('len'=> 1),
 			'addColumn' => array('len' => 5),
 			'getCatColumnInfo' => array('len' => 1),
-			'editColumn' => array('len' => 5)
+			'editColumn' => array('len' => 5),
+			// Default Values options
+			'getDefaultValueTree' => array('len'=>0) 
 		)
 	)
 );
--
libgit2 0.21.2