gimbal lock

        CurrentRotation.Pitch = 90;
        CurrentLocation.X = Floor.Location.X + 51;
        SetActorLocation(CurrentLocation);
        FQuat Quat1(CurrentRotation);
        FQuat QuatZ(FVector(0, 0, 1), CurrentYaw*DeltaTime);
        FQuat rot = Quat1*QuatZ;
        NewRotation = rot.Rotator();
        SetActorRotation(NewRotation);