Create multiple movie instances with AS?

1

I’m running into a roadblock with creating multiple instances of a movie clip. I’m trying to display a series of boxes across the bottom of the stage. The number of boxes are determined by _global.maxStep[_global.sectionNum]. I have a movie clip called StepBox that will serve as the template for each box. In the StepBox movie clip is a dynamic text box called stepNumText, which I want to set to the value of the counter. The problem I have is that I’ve only ever used attachMovie, but there is no movie for it to attach to. I tried using Content since that’s the name of the layer this is in, but I know that doesn’t make sense (and it doesn’t work).
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_global.updateBoxes = function() {
 var curr_box;
 for (i = 1; i <= _global.maxStep[_global.sectionNum]; i++) {
  curr_box = Content.attachMovie("StepBox", "StepBox"+i+"_mc", i);
  curr_box._x = 30 + 20*i;
  curr_box._y = 375;
  curr_box.stepNumText.text = String(i);
 }
};

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Any help for this newbie would be greatly appreciated!

Thanks!

Mathminded