ActionScript 3.0 :: Event Target Inside A Movie Clip?

How can I target an event target that is inside a movie clip?

portfolio_mc.landingBtn1_mc.addEventListener(Mouse Event.MOUSE_OUT, landingRollOutFunc);

ActionScript Code:
function landingRollOverFunc(myEvent:MouseEvent):void {
TweenMax.to(event.target, .2, {scaleX:1, scaleY:1});[code]..........

//This obviously doesn't work but it will provide an idea of what I'm trying to do:

function landingRollOverFunc(myEvent:MouseEvent):void {
TweenMax.to(MYPARENTCLIP.event.target, .2, {scaleX:1, scaleY:1});
}