AS3.0: Can't add child and access subchildren timelines?

Question

I have the following code:
var myParent:Parent = new Parent();
var mySymbol_01:Symbol01 = new Symbol01();
var mySymbol_02:Symbol02 = new Symbol02();
myParent.x=100;
myParent.y=100;
addChild(myParent);
myParent.gotoAndStop(1);
button.addEventListener(MouseEvent.CLICK, buttonPressed);
function buttonPressed(e:Event):void{
removeChild(myParent);
playCopy();
function playCopy():void{
addChild(myParent);
myParent.gotoAndPlay(2);
myParent.x=100;
myParent.y=100;
//myParent.rects.width=200;
//myParent.circ.width=300;
If I take
//myParent.rects.width=200;
//myParent.circ.width=300;
and remove the comments, the file breaks and no Movie Clips appear on the stage.  Does this have to do with casting the Children as Movie Clips, which I may not have done here?

Answer 1

No error codes Ned, it just adds the Child at the last frame in the timeline which happens to be frame 60 (I have a
n animation in the y direction just for kicks to see if I can get the animation to play and have the object move down
ward vertically but it just "pops" into place without any animation.
And no, it's not a sound animation.