Holybro H-RTK F9P Drone CAN Helical GPS RTK Modul

Hey guys,

I have two Holybro H-RTK F9P Drone CAN Helical GPS RTK Modules and want to get Heading from them. I am using Pixhawk Cube Orange. Both Modules are connected over CAN and I do get GPS messages from both modules and get 3D RTK Fix. I tried so many things but I do not get any heading information.

Do I only need to modify the parameters in QGC or also parameters in ublox u-center?

Can someone help me?

Have you followed the documentation and changed the PX4 parameters?