Modify level gravity through blueprint

My game is entirely physics-based, and I want to have my ingame level editor be able to modify the level gravity dynamically. I need it to apply to all physics objects in the level, not only characterMovementControllers as other solutions I’ve found use. If I can access and change the globalGravityZ on WorldSettings from a blueprint, that would be ideal, but I can’t find a way to SET that value, only GET. I’d like for this to be able to happen at any time, but for now, if I could get it working during construction script, it would meet my current needs.