TimelineLite doubt

Hi, I want to use the TimelineLite class when I press a button. I have this code in the main timeline:

Code:

Code:

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TweenLite.delayedCall(0, myFunction, ["param1", 2]);
function myFunction(param1:String, param2:Number):void
{
    var timeline:TimelineLite = new TimelineLite();
    timeline.append( new TweenLite(my_mc, 0, {y:"mouseY",ease:Circ.easeOut, onComplete: goFrame}) );
}
function goFrame()
{
    my_mc.gotoAndStop(5);
}

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This code allows me to send a movieclip called my_mc to a frame that I want with a time delay. How can I do to call the function by pressing a button and not with a delayed call?

Thanks