recursive functions

Question 1: I'm trying to create a recursive function that will start at a parent node and work its way through the children, printing out their assetId, but it only returns the first child in each instance. 

function GetChildren(oNode){
	ChildrenNode=oNode.getNodeChildren();
	if (ChildrenNode!=null) {
		for ( i = 0; i < ChildrenNode.length; i++ ) {
			print("num "+i+" Length"+ChildrenNode.length+' Parent: '+oNode.assetId+' Child: '+ChildrenNode[i].assetId);
			GetChildren(ChildrenNode[i]);		
		}
	}
}
 
GetChildren(Scene.getPrimarySelection());

If I start with the following parent child structure: 

Square

-childSquare1

--Grandchild1

--Grandchild2

-childSquare2

It will only return (-childSquare1, --Grandchild1 )

Any idea what I'm doing wrong? 

Question 2: how do I also return the node's label name, and not just its assetId name? *Edit* I figured this one out- have to use .getLabel().