[AS3] Access Datagrid custom CellRenderer Object

[veo]

Currently I have a custom cell renderer that extends CheckBox and implements ICellRenderer.

I've had to override set selected because every time I would select a row in the datagrid, the check box for that row would select, or deselect when moved off of it.

What I'm trying to do is manually select/deselect items from another movieclip (not the mouse click).

The class has a clickHandler in it that would do this, but I can't seem to access it. Calling

myDatagrid.getCellRendererAt(dg.selectedIndex,0).clickHandler()

will throw a 1061: Call to a possibly undefined method clickHandler error.

Below is the class for the custom cell renderer. Any ideas would be appreciated.

package  {
    
    import fl.controls.CheckBox;
    import fl.controls.listClasses.ListData;
    import fl.controls.listClasses.ICellRenderer;
    
    
    import flash.events.MouseEvent;
    
    public class CboxRenderer extends CheckBox implements ICellRenderer{

        public var _listData:ListData;
        public var _data:Object;

        private var checkComponent:CheckBox;
        
        public function CboxRenderer() {
            // constructor code
            super();
            label   = "";
            addEventListener(MouseEvent.CLICK,clickHandler);
        }
        
        public function set listData(ld:ListData):void{_listData = ld;}
        public function get listData():ListData{return _listData;}
        
        public function set data(d:Object):void
        { 
            _data = d;
            label   = "";
        }
        public function get data():Object{return _data;}
        
        public function clickHandler(e:MouseEvent):void{
            _selected      = !_selected;
            _data.Available = _selected;
        }
        
        override public function get selected():Boolean{return _selected;}
        override public function set selected(value:Boolean):void{
            _selected   = value;
        }

    }
    
}