is this black magic or a bug?

[Anshoo Arora]

Well, you use ChildObjects method to retrieve a collection. If you use Index, which only "one" object can have in its specified class, how will this method retrieve the object collection. Thus, it returns 0. You use ChildObjects to find the correct object that you are looking for. If you already know what object you want, then you can simply use Index. Why go through the trouble of using ChildObjects in the first place?