How do i do that?

Hi everyone,

I'm trying make a tween motion with the tween class for a handful of movie clips i want to animate.

function tweenAnim(var mcNumber:Number) {
var myTween = new Tween(mc[mcNumber], "_y", ......);
}

Flash don´t recognize my movie clip (mc[mcNumber]).
There's any other way to do this? I've already tried many different syntaxes like "mc"+mcNumber, or other stupid things like that, but none of them works. All i need is a reference to a movie clip instance....
I've mc1, mc2, mc3, mc4...and so, till mc10, and for all of them i want the same animation.
If i put one instance name directly, like "...new Tween(mc1, "_y", ......);" it works perfectly.

Thanks...