Hi,
I’ve discovered a problem with the “ATC ID” variable.
When I change the “ATC ID” via JS it takes more than 2 minutes to change on the plane (The writing on the plane).
It doesn’t change the way the atc contacts me either.
To reproduce the problem easily, just use Simvar Watcher and set “ATC ID”, enter a value and click on Try set value.
The default tail registration code (on the tail) only checks for changes periodically, leading to this outcome. There is no way to force the refresh.
That’s what I’ve seen, unfortunately.
But that doesn’t explain why, when Atc contacts me or I contact him, he keeps the default name and doesn’t change it to the one I’ve replaced.
This works for the flight number
The person who coded this didn’t think this writable variable could change 
I think it changes when you switch over to another controller, or at least it did when I tried this in the early days.
The idea was good, but unfortunately I tested it and it didn’t work.
Hello everyone,
I was able to reproduce the issue.
If that’s ok, can you tell us why you want to change ATC ID on the fly?
We deprecated some features inherited from FSX so I want to make sure we don’t go this way if there’s a good use for this feature.
Regards,
Sylvain
Some vehicles have the ability (via custom UI) to change their registration (or license plate) after loading into a flight.
Yes, that is what I definitely experience.