How to change MAV_SYS_ID

[JSJS]

Hi all,
I am struggling with changing MAV_SYS_ID via Mission Planner.
I typed different value of MAV_SYS_ID then clicked "Write Params", after that, Mission Planner pop up error box and it said "Set MAV_SYS_ID Failed".
I really want to change "MAV_SYS_ID" 1 to 2.
Please help me.
Thanks.

 

[h-elsner]

Yuneec has set the SYS_ID fix to 1. It cannot be changed.

https://developer.yuneec.com/documentation/125/Supported-MAVLink-Messages

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