TextArea (onChanged = possible?)

programming flash
1

Does anyone know if it is possible to detect when a TextArea component has changed. I found this in the help docs. But I really want to detect onChanged. Any help will be greatful.


/**  Requires:   - TextArea instance on Stage (instance name: my_ta) */  
var my_ta:mx.controls.TextArea;  
var taListener:Object = new Object(); 
  taListener.focusOut = function(evt_obj:Object) {  
  if (my_ta.length < 1) {   
    trace("Please enter a comment");  
  } 
}; my_ta.addEventListener("focusOut", taListener);