title: FlexEvent.DATA_CHANGE event in itemrenderer not firing from as class
body: <p>I have a CustomItemRenderer for List component and I set list label on onDataChange() event of this CustomItemRenderer. 
  onDataChange event type is mx.events.FlexEvent.DATA_CHANGE.<br></p>
  
  <p>After some property changes on dataprovider, I'm trying to fire new mx.events.FlexEvent.DATA_CHANGE in as class with </p>
  
  <pre><code>_view.EncoderList.dispatchEvent(new mx.events.FlexEvent(mx.events.FlexEvent.DATA_CHANGE));
  </code></pre>
  
  <p>Following, same process works for buttonClick fire,</p>
  
  <pre><code>_view.SplitBtn.dispatchEvent(new MouseEvent(MouseEvent.CLICK));
  </code></pre>
  
  <p>So, what could be the reason I couldn't fire CustomRenderer's FlexEvent ? </p>
  
  <p>Note: debugged and sure its not firing.</p>