Show the "use_alerts" variable content (true or false) on the same screen as the doors status

[Gilles94500]

I would like the content of the variable "use_alerts" to be added to the screen. As it can be modified by an external program, it must have the same check frequency as the doors status.

I suppose that it has to be located in the "status_check" section but I don't know how to add the status of the "use_alerts" variable (true or false) to the display.
It is only to display the status, no update required.

Thanks for your help.