How disable Gravity without disable Collision?

Hello!
Someone can say me, please, how i can disable gravity? I know about “gravity scale” in character movement settings, but it’s not good because 0,0 gravity scale also disable collision of my character. I’m just want that my character will move on z-axis (up/down) and not fall because gravity. I know about flying mode, but because gravity my character fall. Flying mode good work for jump, but not clear fly. I want move my character up on z-axis and that he will stay on location when stopped movement.