I have been trying to use a button on my Stream Deck to modify ATC ID in MSFS 2024 without success. I have been testing in the Script Editor with a simple script A35·(>A:ATC·ID,·String) The Script Editor does not like any non numeric characters being sent to the variable so the indicator is red but the Debug Window shows the script executing but there is no change to ATC ID. In an attempt to validate what I am trying to achieve I ran SimVar Watcher from the SDK and was able to change the ATC ID. On a side note SimVar Watcher did not accept non numeric characters either but I was able to modify the program to allow me to paste in non numeric characters.