Hi guys. I was wondering if it's possible to change the force of gravity on objects and me. I mean like make them take a longer time to fall in a certain room, and they go higher if I throw them because the gravity is low. I also want this effect on the player, too.

yep, make a trigger where you want to change gravity and use trigger_gravity

I've tried that, but it doesn't work well.

Do trigger_gravity with a lower number. I was just playing around with that. Dont use super low numbers. I say lowest is about 300. Default is 600.