AS3 Demo cant make it work

Question

Hi guys,

Im trying to use this example code from:

http://www.michelvandersteege.nl/blog/archives/266

function splitRGB(img:DisplayObjectContainer):Object
{
 var bmd:BitmapData = new BitmapData(img.width, img.height);
  bmd.draw(img);
  var r:BitmapData = new BitmapData(bmd.width, bmd.height, true, 0xFF000000);
  var g:BitmapData = new BitmapData(bmd.width, bmd.height, true, 0xFF000000);
  var b:BitmapData = new BitmapData(bmd.width, bmd.height, true, 0xFF000000);
  var rect:Rectangle = new Rectangle(0, 0, bmd.width, bmd.height);
  r.copyChannel(bmd, rect, new Point(0,0), BitmapDataChannel.RED, BitmapDataChannel.RED);
  g.copyChannel(bmd, rect, new Point(0,0), BitmapDataChannel.GREEN, BitmapDataChannel.GREEN); 
  b.copyChannel(bmd, rect, new Point(0,0), BitmapDataChannel.BLUE, BitmapDataChannel.BLUE);
  var h:Sprite = new Sprite();
  img.parent.addChild(h);
  h.x = img.x;
  h.y = img.y;
 img.visible = false;
 return {r:h.addChild(new Bitmap(r)), g:h.addChild(new Bitmap(g)), b:h.addChild(new Bitmap(b))};
}

var rgb:Object = splitRGB(img);
rgb.r.blendMode = BlendMode.SCREEN;
rgb.g.blendMode = BlendMode.SCREEN;
rgb.b.blendMode = BlendMode.SCREEN;

function update(e:Event):void
{
 var val:Number = Math.random() * 10;
 rgb.r.x = rgb.r.y = val;
 rgb.b.x = rgb.b.y = -val;
}
stage.addEventListener(Event.ENTER_FRAME, update);

All im doing is copy/paste it into flash cs3 in a as3 project onto the first frame and placing a MC on stage wich is an image.

Im getting this error: 1120: Access of undefined property img.

Can someone please help me figure it out?

Thank you.