doubt - registry active in vtiger_globalvariable

[rslemer]

System include a registry for all global variable defined in this table

but when one specific registry is removed, not is erased into table

How system knows what registry as active?

My question is, because I wish created a job include or change a text field, with a text in global variable ApplicationAnnouncement to display a message, when connection with PBX is broken

In other words, all time my monitoring process identify connection is down, my plan is input a text message in this GV to alert all users to contact a support for solve this problem.

How I can did that?

[joebordes]

I would create an announcement GV and assign it to a user you don't use, then when you want to "activate" the message you just have to set it to mandatory, when you "deactivate" you unset the mandatory field