[flexcoders] question for flex coders

[brad]

Why does my dateformater NOT work in my grid (below) if 
I specify the resultformat as E4X?  Thats the only difference 
I can see in the grids below. 

Grids 1 and 2 are not e4X and yet they display the date as processed by
the dateformatter.
 
Grids 3 and 4 are e4x and the field is just blank for them.
 
Hopefully I'm not being bone-headed!
 
thanks in advance,
brad
 
Relevant Code Snippets follows
 

<mx:DateFormatter id="publishDate" formatString="MMMM DD, YYYY" /> 
****************************************************** 
private function dateFormat(dateItem:Object, 
                           dateColumn:DataGridColumn):String 
{ 
   return publishDate.format(dateItem[dateColumn.dataField]); 
} 

[Bindable] private var bookStock:ArrayCollection; 
private function bookHandler(evt:ResultEvent):void 
{ 
  bookStock = evt.result.books.stock; 
} 

[Bindable] private var bookStock2:XMLList; 
private function bookHandler2(evt:ResultEvent):void 
{ 
        bookStock2 = evt.result.stock 
} 
                
[Bindable] private var bookStock3_List:XMLListCollection; 
private function bookHandler3(evt:ResultEvent):void 
{ 
        var bookStock3:XMLList = new XMLList(evt.result.stock); 
        bookStock3_List = new XMLListCollection (bookStock3); 
} 

****************************************************** 
<mx:HTTPService id="bookData" url="assets/books2.xml" /> 

<mx:HTTPService id="bookData2" url="assets/books2.xml" 
                                result="bookHandler(event)" 
                                fault="faultHandler(event)" 
                                /> 
<mx:HTTPService id="bookData3" url="assets/books2.xml" 
                                    result="bookHandler2(event)" 
                                 resultFormat="e4x"/> 
                                  
<mx:HTTPService id="bookData4" url="assets/books2.xml" 
                                    result="bookHandler3(event)" 
                                 resultFormat="e4x"/> 
******************************************************** 
<mx:DataGrid  id="dg2"  x="42" y="125" width="950" height="100" 
              dataProvider="{bookStock}" > 
  <mx:columns> 
    <mx:DataGridColumn dataField="name" headerText="name"/> 
    <mx:DataGridColumn dataField="author" headerText="author"/>         
    <mx:DataGridColumn dataField="category" headerText="category"/> 
    <mx:DataGridColumn dataField="description"
headerText="description"/> 
    <mx:DataGridColumn dataField="publish_date" 
                       headerText="publish date" 
                      labelFunction="dateFormat"/> 
  </mx:columns> 
</mx:DataGrid> 
                  
<mx:DataGrid id="dg3" x="42" y="250" width="950" height="100" 
                 dataProvider="{bookStock2}" > 
  <mx:columns> 
    <mx:DataGridColumn dataField="name" headerText="name"/> 
    <mx:DataGridColumn dataField="author" headerText="author"/>         
    <mx:DataGridColumn dataField="category" headerText="category"/> 
    <mx:DataGridColumn dataField="description"
headerText="description"/> 
    <mx:DataGridColumn dataField="publish_date" 
                         headerText="publish date" 
                        labelFunction="dateFormat"/> 
 </mx:columns> 
</mx:DataGrid>