title: Flex3 - action script : How to capture the emptyness of an Array of Object
body: <p>I would like to know when an Array of objects is empty (or not). </p>
  
  <p>I tried using the ObjectProxy as follow:                          </p>
  
  <pre><code>myArrayProxy=new ObjectProxy(myArray);
  myArrayProxy.addEventListener(PropertyChangeEvent.PROPERTY_CHANGE, changeArrayHandler)
  </code></pre>
  
  <p>But the event is not fired when the object's content change.  </p>
  
  <p>Any idea on how to solve this?   </p>
  
  <p>Thanks</p>