Need help finding a webinar showing use of XPath

Hello - I am relatively new to TestComplete and am still learning the ropes.   Some time ago, I watched a webinar (hosted on the SmartBear website) on namemapping, and I recall the presenter was showing code with allowed him to select objects with the EvaluateByXPath method and the Sys.HighlightObject method.

At the time, it was completely over my head.   Now I have developed more skill in TestComplete and I would really love to be able to find that video again, but I can't (and not for lack of searching).

Can anyone point me towards this video, or point me towards a repository of videos that I can scan and manually search for the content I'm seeking?