PhysicsVolume problem

I just started to learn Unreal and recently I faced a problem with the PhysicsVolume. I put one int hte scene and then placed two boxes, one above the volume and one outside. No matter how much I change terminal velocity they fall absolutely the same. In another project with unreal character volume seems to work and change gravity. Can you suggest me how to fix the problem or maybe you have tutorials including falling object and PhysicsVolume interaction? Thank you for your time, really looking forward to hear from you. (If you don’t get the question because of my bad description just drop the line and I will try to explain it to you)