diff --git a/js/app/views/ParameterUI.js b/js/app/views/ParameterUI.js
index f9c57e4..6f9931e 100755
--- a/js/app/views/ParameterUI.js
+++ b/js/app/views/ParameterUI.js
@@ -428,16 +428,17 @@ Ext.define('amdaUI.ParameterUI',
 								xtype:'component', width: 20
 							},
 							{
+								xtype : 'numberfield',
 								itemId: 'formParamTimeStep', fieldLabel: 'Time Step (sec)*', labelAlign: 'top',
 								allowBlank : false, blankText : 'Time Step is required',
 								name : 'timestep',
-								regex : new RegExp('^[0-9]+$'),
-								regexText : 'Time Step has to be a numeric value',
-								width: 150, validateOnChange: false,
+								minValue : 0.001,
+								hideTrigger: true,
+								width: 150,
+								//validateOnChange: false,
 								validateOnBlur: false
 							},
 							{
-								xtype: 'textfield',
 								itemId: 'formParamUnit', 
 								fieldLabel: 'Units',
 								name : 'units',
@@ -446,15 +447,13 @@ Ext.define('amdaUI.ParameterUI',
 							{
 								xtype:'component', width: 20
 							},
-							{
-								xtype: 'textfield',
+							{								
 								itemId: 'formParamYTitle', 
 								fieldLabel: 'Y Title for Plot',
 								name : 'ytitle',
 								width: 150
 							},
 							{
-								xtype: 'textfield',
 								itemId: 'formParamDescription',
 								name: 'description', 
 								xtype: 'textarea', fieldLabel:'Description',
diff --git a/js/app/views/SearchUI.js b/js/app/views/SearchUI.js
index 8cb2285..7a5836e 100755
--- a/js/app/views/SearchUI.js
+++ b/js/app/views/SearchUI.js
@@ -480,8 +480,11 @@ Ext.define('amdaUI.SearchUI',
 								},
 								{
 									xtype: 'numberfield', name: 'sampling',
-									fieldLabel: 'Sampling Time Step (sec)*', minValue : 0,
-									labelAlign: 'top', hideTrigger: true, width: 165
+									allowBlank : false, blankText : 'Time Step is required',
+									fieldLabel: 'Sampling Time Step (sec)*', minValue : 0.001,
+									labelAlign: 'top', hideTrigger: true, width: 165,
+			//						validateOnChange: false,
+									validateOnBlur: false
 								},
 								{ xtype: 'component', width: 45 },
 								{
@@ -490,9 +493,9 @@ Ext.define('amdaUI.SearchUI',
 									labelAlign: 'top', hideTrigger : true, width: 165
 								},
 								{
-									xtype: 'textfield',
+									xtype: 'textarea',
 									name: 'description', 
-									xtype: 'textarea', fieldLabel:'Description',
+									fieldLabel:'Description',
 									width: 375, height: 70,
 									colspan: 3
 								}
--
libgit2 0.21.2