Connection of telemetry to ESC BHeli32

I can’t get the ESC telemetry to work for some reason. Seems ike I did everything according to the instruction.

SERVO_BLH_AUTO, 1
SERVO_BLH_MASK, 3840 Should I change this param?
SERVO_BLH_OTYPE, 4
SERIAL4_PROTOCOL, 16
Here aremy questions:
Did I note chanels 9-12 right?
(ESCs are attached to 1-4 aux out)
Is serial4 connector same as GPS2 on the cube?
my controller is cube black 4.0.4

Use Mavlink2 on telemetry!

Yes. Even that’s a serial port. Connect telemetry wire on serial and set that particular port protocol to ESC telemetry.