How to get a MovieClip from TileList?

programming flash
1

Hi

I have a TileList witch all my movieclips from library, i wold like to click in item and this item appear on my stage.



myTileList.addEventListener(MouseEvent.MOUSE_DOWN,clicouItemLista);

function clicouItemLista(e:Event){

//-----------------------example out
trace(e.target.source);//cn4 
trace(e.target.name);//instance198
trace(e.target.data);//[object Object]
trace(e.target);//[object ImageCell]


var m:MovieClip = e.target as MovieClip;

myCustonStage.addChild(m);

}

but i don’t know how to convert my e.target to movieClip i always has this kind error:


TypeError: Error #2007: O parâmetro child não deve ser nulo.
    at flash.display::DisplayObjectContainer/addChild()

can anyone help me please?
tkkz