Not able to change DeviceInstance from CerboGX

I’m trying to change the DeviceInstance from the CerboGX but with the GUI it is not possible, and when I try to change it through the command line it’s also not updating.

Used the explenation as described here: Changing NMEA2000 instances [Victron Energy]

Did I mis something? Need to change it because of a conflict in the NMEA2k network with the Garmin BoatSwitch.

Thanks!