Tween Magnify AS3 HELP

programming flash
1

Hello,
I made this ball tweening around scene on button click.

import com.greensock.*; 
import com.greensock.easing.*;
stop();
but.addEventListener(MouseEvent.CLICK, onClick);

function onClick(e:MouseEvent)
{ anim();
}function anim():void{
TweenMax.fromTo(mala, 4, {x:400, y:150, scaleX:2, scaleY:2},{bezierThrough:[{x:340, y:160},{x:285, y:185}], 
             orientToBezier:false,  scaleX:3, scaleY:3, 
              ease:Elastic.easeOut});
}

I would like it to magnify certain bckground stuf when it crosses over them.
Found this tutorial on magnify on


Just how to make it to do the same, but with listening to my ball tween, not cursor movements?
Thanks.