Creating Objects in AS2.0 OOP technique

programming flash
1

I am currently trying to teach myself OOP with AS 2.0, but I have hit a wall. I have a ball class that currently just creates a movieclip and places it on screen. I also have a Game class that creates the different balls. I am trying to make it so that the balls are created and named on the fly.
My problem is that there is no reference to the ball being created. I even tried storing it in an Array, but when I reference the Array positions I get Undefined just like if I try referencing the O_ball[bname] bname is just a variable holding the string that puts the namne togther. 3 balls are created successfully but how do I reference them or name them If I try to do it any other way I get no such property errors.

I am also almost done reading Essential AS 2.0 and I have not found anything in there with a loop that creates objects of a class.

Example:

private function setup_the_game():Void {
    for (var i:Number = 0; i<=num_of_balls; i++) {
        create_ball(i);
    }
    O_bar = new Bar();
}

private function create_ball(num):Void {
    var bname:String = "ball"+String(num);
    O_ball[bname] = new Ball(num);
    A_balls[num] = O_ball[bname];
    trace(bname);
    trace(A_balls);
    trace(O_ball[bname]);
}