Unable To Operate Servo and relay with Herelink

Hello,
We have been trying to operate a relay from auxiliary port on orange cube, which we are unable to do. We tried to map the buttons using solex tx and QGC but nothing worked. Can anyone please help us in solving this issue.
Thank you.

Have you configured the ardupilot parameters?

https://ardupilot.org/copter/docs/common-auxiliary-functions.html

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