Setting a user as a parent user of another

I am trying to set a user as a parent user of another user. The problem is that even when I set the parent-child relationship, and then set a constraint such as parent pm = Current user, nothing will come up when I set a do a search for on a repeating box. If I remove the Parent pm = current user constraint then everything shows up including other user’s children. Any idea why this is happening?

Have you tried using the debugger to make sure the search is correct?

Did you ever find a solution to this problem. I’m looking to develop an app with similar functionality and this is a cornerstone of the design requirements.