How does one add two variables together? For example:  $A = $A +$B

Use +=

$A += $B

is equivalent to:

$A = $A + $B

@Mecheng70I looked there and all it would let me do was add or subtract a fixed number.  I had to hit the Play button to get the variables to show up:

 

Thank you for the assist.  Been working with electronics for decades, but ISY is new to us.

How does one set a variable to the current temperature (${mod.weather.temp.current})?  I want to start a timer based on the current temperature outside.

Thank you.

Never Mind.  Climate Module is EOL.

How does one set a variable to an ELK Temperature (elk.zone.XX.temp)?  I want to start a timer based on the current temperature outside.

Thank you.

This rule appears to be running every time the State Variable S.FH.Zone.Count changes, not just when it changes to a value >=4.  I was under the impressions that the rule would only run if the value changed to something >=4, but maybe I was mistaken.

 

I removed the Else Actions because they were running when the value changed to 3.

3 hours ago, IT Solutions said:

Never Mind.  Climate Module is EOL.

While climate module is EOL, there are several Weather Nodeserver that take place of the Climate module. Check the Nodeserver store.