Adding a child to a child

Question

In AS3, I am trying to add a child to a specific child of a MovieClip.

To do this I have done the following:

for (var r:Number = 0; r < 2; r++) {
    sand = new Sand();
    sLayers.getChildAt(r).addChild(sand);
}

When sLayers is the MovieClip parent, r is the specific child of sLayers, and sand is the child I want to add.

It comes up with the following error:

1061: Call to a possibly undefined method addChild 
      through a reference with static type flash.display:DisplayObject.

Sorry I simplified the code, it would take up too much space.

Is there another way to do this? Or am I close but just missing something?

Answer 1

try this

for(var r:Number = 0; r < 2; r++)
{
    var sand:Sand = new Sand;
    (sLayers.getChildAt(r) as MovieClip).addChild(sand);
}