Per the Java action documentation (open the java action in your modeller, tab ‘Documentation’ ): For references, the java function needs the fully qualified name – ‘YourModule.Checklist_Content_ResponsibleLineManager’.
Haven’t actually tested it right now but I’m pretty sure I’ve used this before :) Hope it helps!
Yes, it’s works pretty fine. Another hint for future readers. ;-)
The key is to use this action in BeforeCommit-event. If the association was already commited it will not work (of course, because ACo the association is not new any longer.)