Setting Placeholder Dimension?

1

hello there guys…,

i want to ask how to make a placeHolder in flash actionscript 3…,
what i do need to know is that how to sett a placeholder width and height
:confused::confused::confused:


 import flash.display.*;

  var placeHolder:Sprite = new Sprite();
  addChild(placeHolder);
  placeHolder.width = 350;
  placeHolder.height = 350;

  var myLoader:Loader = new Loader();
  swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE , onComplete);
  myLoader.load(new URLRequest('*someIMAGE*');

function onCOmplete():void
{
  placeHolder.addChild(myLoader.content);
}

why is that by that kind of code the placeHolder width and Height become 0??