      *  @playerversion AIR 1.5
      *  @productversion Flex 4
      */ 
-    public function set autoSizePopUpHeight(value:Boolean):void
-    {
-        if (_autoSizePopUpHeight == value)
+    public function set popUpHeightMatchesAnchorHeight(value:Boolean):void
+    {
+        if (_popUpHeightMatchesAnchorHeight == value)
             return;
             
-        _autoSizePopUpHeight = value;
+        _popUpHeightMatchesAnchorHeight = value;
         
         invalidateDisplayList();
     }

     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    protected function positionPopUp():Point
    {
        // This implementation doesn't handle rotation
        var matrix:Matrix = $transform.concatenatedMatrix;
        var regPoint:Point = new Point();
        
        var popUpBounds:Rectangle = new Rectangle(); 
        determinePosition(popUpPosition, popUp.width, popUp.height,
                          matrix, regPoint, popUpBounds);
        
        var adjustedPosition:String;

    //  popUp
    //----------------------------------
    
    private var _popUp:IFlexDisplayObject;
    
    [Bindable ("popUpChanged")]
    
    /**
     *  IFlexDisplayObject to add to the PopUpManager when the PopUpAnchor is opened. 
     *  If the popUp implements IFocusManagerContainer, the popUp will have its
     *  own FocusManager so that, if the user uses the Tab key to navigate between
     *  controls, only the controls in the popUp are accessed. 
