How to apply onComplete to GTween(gskinner) motion tweener?

Hi,

I am trying to add an onComplete with staticRate to the (gskinners) GTween in an attempt to Optimization the SWF Framerate similar to what Lee Brimelow has done in the following project (http://www.gotoandlearn.com/play?id=112) . My action script is below.

Thank You.

public function staticRate():void{
stage.frameRate=5;
}

public function animationRate():void {
stage.frameRate=30;
}

private function onClick(e:MouseEvent):void {
trace(“BUTTON: SINGLE CLICKED”);
animationRate();
var tw:GTween=new GTween(container,0.8,{rotationY:Math2.toDeg(e.curr entTarget.angle+Math.PI/2),z:100},{ease:Exponential.easeInOut,delay:0.1});