PX4Flow - Parameter change not stored - Brightness

Hello all
I’m doing some tests with PX4Flow and have increased the camera brightness parameter to 60 using QGC ( connecting unit directly to computer with USB) hoping to get better tracking on our floor.

However on power cycling the parameter reverts to it’s default value of 20.

How do we get a parameter change to be permanent in PX4flow firmware?


We have resorted to changing the values in code and upgrading firmware.
If anyone has a better solution I’m all ears