Is the “Camera number” concept really useful for anything? I just leave it empty in every field and it wont make any difference to my game.
My suggestion is to remove this thing, deprecate it, hide, whatever, from the actions and the expressions, because I really don’t see any difference whether filling it or not. Maybe it is something carried over from older GDevelop versions, and has no utility today? (Just like the deprecated “Always” condition?)