I have a custom object with a collection object added via Add Object. This collection contains a bunch of other custom objects, created via NewObject() function.

At some point, I needed a reference to the top level object from some of the objects in the collection. I passed it as a parameter and stored in a custom property. To clean up, in the destroy() of these custom object I have a

this.oParent=null

but it seems that the destroy never fires. I've set breakpoints at various places. I've even tried to loop through the collection, like this:

	FOR EACH oitem IN this.octls
		oitem.oparent=null
		oItem=null
	ENDFOR
	this.RemoveObject("oCtls")

but it doesn't seem to change anything - the form where this all happens won't release if any of the item objects have ever set the .oParent to the master object. If I don't visit the code where it's set, everything's fine.

Should I just add these as children of the master object, i.e. via this.newobject(), and just store a reference to them in the collection? I do need the collection so I can find the object when needed - they are created ad hoc and there can be an arbitrary number of them.

Or is there another cause why my references keep dangling?