Then paste the crash. It’s not crashing because something is simply connected, it means you’re connecting something that breaks the game - ie. load level that does not exist (shouldn’t crash but who knows).
Could you post a picture of what you changed and how does it look when it crashes? I mean the node connections.
If you don’t want to make another branch, you can make this variable an enum instead. Make an Enum in the content, give it several values like ‘LoadingMain’, ‘LoadingTavern’ etc. and then switch based on that.