I am making a photo - based Dornier Do 228

and

this is my input for the control surface -

Yaw + (Roll * 0.5) + (VTOL*0.25)

Everything seems fine, but

I want the VTOL working on activation group 2.
Activate2 + VTOL doesn't work as I expected.
(Yaw + (Roll * 0.5) + (Activate2 +VTOL*0.25)
I knew the function before but I forgot it.
What to d-do???