Flash Transition Manager - addChild

programming flash
1

Hi All,

I have a few swf:s which I load into a main swf
I would like to use the Flash Transition Manager -zoom effect on all children when they are loaded into the main.swf.

I get error:
1067: Implicit coercion of a value of type flash.display:Loader to an unrelated type flash.display:MovieClip.

My code:

function artworkLoaded(event:Event):void {
// Load Image by adding it to the display list
addChild(artworkLoader);
var myTM:TransitionManager = new TransitionManager(artworkLoader);
myTM.startTransition({type:Zoom})