     //  columnCount
     //----------------------------------
     
-    private var _columnCount:uint;
-    
-    /**
-     *  @private
-     */
-    public function get columnCount():uint
+    private var _columnCount:int;
+    
+    /**
+     *  @private
+     */
+    public function get columnCount():int
     {
         return _columnCount;
     }

     *  @playerversion AIR 2.0
     *  @productversion Flex 4.5
     */
    public function set rowCount(value:uint):void
    {
        _rowCount = value;
    }

     *  @playerversion AIR 2.0
     *  @productversion Flex 4.5
     */
    public function set columnCount(value:int):void
    {
        _columnCount = value;
    }
