How do I check/uncheck this box? (Bullet behavior)

Bullet behavior has a property of setting angle of motion automatically or not with the object's angle. It can be selected while on the project, but during the game I can't change it through events.

The actions of the behavior that change the angle require you to SET a angle. I just want to disable/enable the automatic setting box. How can I do it?

You can't set this through events.

You can create an object off screen and either check or uncheck the box. Then when you bring in new instances of that object, they will keep that setting. You can also use On Start of Layout to destroy that offscreen instance while still keeping those stored settings for new objects.

Well, that's a bummer...

Anyway, thanks for answering.

+ System: Every tick

-> Sprite: Set Bullet angle of motion to Self.Angle degrees

Use a group to enable and disable.