How do I change the depth when using addChild?

Question

I'm adding a bg to the same canvas, but it's overlapping everything added before it.

I want to change the depth and make it appear beneath everything.

Answer 1

addChildAt(childObject, 0);

Answer 2

Also there is setChildIndex(child:DisplayObject, index:int):void, but you should manage your depths either by addChildAt or create your children in the right order i.e. bg first.