[CONNECT U7] Using ElementTemplates

I'm having difficulty reading an Element Template from my .dgnlib. In the .dgnlib I have:

And when I try FindTemplateNodeByPath(), the result is always NULL and Invalid. I'm using the current DGN file as the DgnFileR value - is that incorrect because the template has not been used and is only in the .dgnlib?

		// try to use a template
		XDataTreeOwner* owner = XDataTreeManager::GetDgnXDataTreeOwner(*ISessionMgr::GetActiveDgnFile());
		ElementTemplateNodePtr parentGroup = ElementTemplateUtils::FindTemplateNodeByPath(L"Common Line Types", *ISessionMgr::GetActiveDgnFile());
		wprintf(L"parentGroup.IsNull() %s\n", parentGroup.IsNull() ? L"TRUE" : L"FALSE");
		wprintf(L"parentGroup.IsValid() %s\n", parentGroup.IsValid() ? L"TRUE" : L"FALSE");
		ElementTemplateNodePtr elementTemplate = ElementTemplateUtils::FindTemplateNodeByPath(L"Common Line Types\\Column Line", *ISessionMgr::GetActiveDgnFile());
		wprintf(L"elementTemplate.IsNull() %s\n", elementTemplate.IsNull() ? L"TRUE" : L"FALSE");
		wprintf(L"elementTemplate.IsValid() %s\n", elementTemplate.IsValid() ? L"TRUE" : L"FALSE");

Bruce