Hello,
i think you are going in the right direction… with ParID90.
With Value 2 you deactivated Bit0 which is by default set. And you activated Bit1. But as the Errortext in AsHelp mentions you must set Bit2 to disable the Monitoring.
Suggestion ParID 90 = 6
6 = 2#00_0000_0110
Greetings
Michael