i’ve tried this morning, by couple of time, i actually change a lot of things into the concept, many hours later i’ve found alternative solution for moving the flaps by calling a function named SetRelativeRotation the target is the flaps themselves and with sockets i snap the flaps to the body of my plane, the origin point is a the same place now i’ll brainstorming tomorow, and i’ll tried to controlle with map range clamped the rotation with the desired value from the “currentRoll” not really difficult and some tutorial on it, but thank for your help.