Reading Servo output raw

We are trying to read the servo value settings on pixhawk servos 9-16 but only get zeros regardless of we set them at. Any idea why this is? Thanks in advance.

Hi Tim,

You need to change SERIALX_PROTOCOL (where x is your serial number) to MAVLink2.
It’s possible to know more about that in mavlink website, any field with ** is a mavlink2 feature.