So, After much research and brain power I have figured out an annoying solution.
I force the Event (to change team) to activate a set variable node at the end of the event.
Set playerArray = playerArray
This tricks the server host to register the repnotify event.
I have read about this in many areas, an I did not find any option to make this any cleaner. I tried many concepts and processes.
The following link is a similar problem.