Matek F765 Ch9 and CH10 Pass thru??

I am trying to enable CH9 and Ch10 as passthru to control two extra servos without FC (Direct control from Tx).
My settings as follow:
Servo9 = 1
Servo10= 1
No movement on the servo. Do I need to change something else? I am assuming that on Matek F765 servo pins header are all powered up once connected to the battery.

Servo power requires a little soldering, to connect the BEC on the top plate into the flight controller.