diff --git a/js/app/models/Download.js b/js/app/models/Download.js
index d532782..b661e02 100644
--- a/js/app/models/Download.js
+++ b/js/app/models/Download.js
@@ -26,14 +26,14 @@ Ext.define('amdaModel.Download', {
 	      {name: 'structure', type: 'string'},
 	      {name: 'refparamSampling', type: 'boolean', defaultValue: false},
 	      {name: 'sampling', type: 'int', defaultValue: '600'},
-	      {name: 'output', type: 'string'},
+	      {name: 'fileprefix', type: 'string'},
 	      {name: 'fileformat', type: 'string'},
 	      {name: 'fileformatTT', type: 'string'},
 	      {name: 'compression', type: 'string'},
 	      {name: 'compressionTT', type: 'string'}
 	],
 	
-	propertiesToCopy : 'id,name,downloadSrc,refparamSampling,sampling,list,timeformat,timeformatTT,structure,output,fileformat,fileformatTT,compression,compressionTT',
+	propertiesToCopy : 'id,name,downloadSrc,refparamSampling,sampling,list,timeformat,timeformatTT,structure,fileprefix,fileformat,fileformatTT,compression,compressionTT',
 
 	getJsonValues : function(){
 
@@ -46,7 +46,7 @@ Ext.define('amdaModel.Download', {
 	  myValues.structure = this.get('structure');
 	  myValues.refparamSampling = this.get('refparamSampling');
 	  myValues.sampling = this.get('sampling');
-	  myValues.output = this.get('output');
+	  myValues.fileprefix = this.get('fileprefix');
 	   
 	  myValues.timesrc =  this.get('timesrc');
 	  // if there's at least one timeTable in case of Download data
diff --git a/js/app/views/DownloadUI.js b/js/app/views/DownloadUI.js
index e120458..b1d2379 100644
--- a/js/app/views/DownloadUI.js
+++ b/js/app/views/DownloadUI.js
@@ -149,7 +149,7 @@ Ext.define('amdaUI.DownloadUI', {
                 var structure = values.filestructure;
                 var sampling = values.sampling ? values.sampling : 600;
 		var refparamSampling = values.refparamsampling == 'on';
-                var output = values.output ? values.output : '';
+                var fileprefix = values.fileprefix ? values.fileprefix : '';
                 var fileformat = values.fileformat;
                 var compression = values.compression;
 
@@ -189,7 +189,7 @@ Ext.define('amdaUI.DownloadUI', {
                     this.object.set('structure', structure);
 		    this.object.set('refparamSampling', refparamSampling);
                     this.object.set('sampling', sampling);
-                    this.object.set('output',output);
+                    this.object.set('fileprefix',fileprefix);
                     this.object.set('timeformat',timeformat);
                     this.object.set('fileformat',fileformat);
                     this.object.set('compression',compression);
@@ -512,9 +512,9 @@ Ext.define('amdaUI.DownloadUI', {
 				    disabled: true
 				},
 				{
-				    xtype: 'textfield', name: 'output',
-				    fieldLabel: 'File Name',				    
-				    disabled: true,  editable: true
+				    xtype: 'textfield', name: 'fileprefix',
+				    fieldLabel: 'File Prefix',				    
+				    disabled: false,  editable: true
 				},
 				{				     
 				      fieldLabel: 'File Format',
--
libgit2 0.21.2