[flexcoders] AdvancedDataGrid group feature?

[markflex2007]

Hi,

I did a AdvancedDataGrid without group,it works fine.

<mx:AdvancedDataGrid  x="8" y="72" width="558" height="247"  
         rowCount="4" dataProvider="{modelLocator.QModel}" >

        <mx:columns>
           <mx:AdvancedDataGridColumn headerText="Name" dataField="Name"/>      
 
           <mx:AdvancedDataGridColumn headerText="Current Status"
dataField="TypeName"/>
        </mx:columns>
</mx:AdvancedDataGrid> 
  

But it shows nothing  with group feature. I check the syntax but it
seems ok. do you know why this happen. Thanks
  
  
  <mx:AdvancedDataGrid  x="8" y="72" width="558" height="247"  
         rowCount="4" >
  
         <mx:dataProvider>  
            <mx:GroupingCollection id="gc1" source="{modelLocator.QModel}">
                   <mx:Grouping>
                           <mx:GroupingField name="TypeName" />
                   </mx:Grouping>
            </mx:GroupingCollection>   
         </mx:dataProvider>      
  
  
  
        <mx:columns>
           <mx:AdvancedDataGridColumn headerText="Name" dataField="Name"/>      
 
           <mx:AdvancedDataGridColumn headerText="Current Status"
dataField="TypeName"/>
         </mx:columns>
  </mx:AdvancedDataGrid> 


Thanks in advance

Mark