Just thought I’d throw this in:
If you’re trying to change gravity for an actor that doesn’t have a movement component, you can’t, or at least, I don’t know how. But what you can do is, if you want to simulate decreased gravity, is adjust the actor’s ‘linear damping’ setting upward.
I don’t know how you would do it for an actor (without a movement component) that you wanted to increase gravity for.
Also, some other components, like the ProjectileMovementComponent also have the Gravity Scale setting.
Good luck.