I'm trying to remove all the sibling nodes in a treeview and I keep getting the error "Unknown Name" on the Remove line.

oParentNode = toNode.PARENT
iNodeIndex = oParentNode.FirstSibling.INDEX

DO WHILE .T.
	IF iNodeIndex <> oParentNode.LastSibling.INDEX
		THISFORM.oTree.Nodes(iNodeIndex).REMOVE && <b>Error occurs here</b>
		iNodeIndex  = THISFORM.oTree.Nodes(iNodeIndex ).NEXT.INDEX
	ELSE
		THISFORM.oTree.Nodes(iNodeIndex).REMOVE
		EXIT
	ENDIF
ENDDO

Can anybody see what I'm doing wrong? TIA