mx tweens

for some reason i cant apply the action to a button. What im trying to do is when you click the button itll perform the action. say if the instance name of my button was btn1 how would that work?

*update (click on the screen)
http://www.eggrollindustries.com/mxtween.htm

var easeType= mx.transitions.easing.Elastic.easeInOut;


function moveIt(x,y,xs,ys) {
myScaleTweenX = new mx.transitions.Tween(ball_mc, "_xscale",easeType, ball_mc._xscale, 100, 40,false);
myScaleTweenY = new mx.transitions.Tween(ball_mc, "_yscale",easeType, ball_mc._yscale, 100, 40,false);
myTweenX = new mx.transitions.Tween(ball_mc, "_x",easeType, ball_mc._x, x, 50,false);
myTweenY = new mx.transitions.Tween(ball_mc, "_y",easeType, ball_mc._y, y, 50,false);
}
_root.onMouseDown = function() {
moveIt(200, 200, 0, 0);
}

im trying.. instead of clicking on the screen and the function executes.. you would click a button and then it would execute.

nvm go it

_root.mcButton3.onRelease = function() {
moveIt(200, 200, 0, 0);
}

duh