             mergeData.insertIndex = 0;
 
             //bottomLayerItems.sortOn("layer",Array.NUMERIC);
-            sortOnLayer(bottomLayerItems);
+            GroupBase.mx_internal::sortOnLayer(bottomLayerItems);
             len = bottomLayerItems.length;
 
             for (i=0;i<len;i++)

    {
        return blendMode == "normal" && (layeringMode == ITEM_ORDERED_LAYERING);
    }
    
    /**
     *  @private

            layeringMode = ITEM_ORDERED_LAYERING; 
    }
    
 
    /**
     *  @private
     */
