Hmmm, papoo asked for:

not to receive a notification every minute as long as condition not changed


So, in your code this test, " if dz.data.state ~= conditionDeviceState then" must send the notification, not only reset the state.

For this I said that the time isn't important if you want to ...

The time isn't the problem, I think that you must check if the condition changed or not, so you only need to store the state in persistent data, not the time.

I think that also with performance in mind, to check all rooms for temperature in each call of the script is a hard job in cpu terms.

I think that the use of one persistent variable is the best way to do it. Of course use only one script for all rooms.

At last, I think that persistent variables ...

Many thanks.

Even before read your post I suspected that the rigth syntax may be the one that you say, and off course it works like a charm.

Regards.

I have a script that need to control internally the state of some dummy devices and store it on persisten data. In lua I can do this:

estado = {['COMPLETO'] = false, ['CESPED'] = true, ['GOTEOS'] = false }
print(estado['CESPED'])

true

In the dzVents script I use code like this:

data ...