Hi there!
I enabled a rule to copy the collaborator from the assignee field but although it runs sucessfully the collaborator field doesnt get set. Please help. It seems to be such an easy rule but it doesnt work!

I tried each option below individually (but no it didn't work:
Copy from Issue
Copy from Parent
Copy from Epic
Copy from Trigger Issue

When I test the rule I make sure the triggering ticket OMS-70 has the assignee empty.
What am I missing? TYIA