Help using a variable for temperature in LUA

[11thNuneaton 0]

Hi all, I have a number of LUA scenes that take action when a thermostat is <= a value. I want to be able to easily change the value for temperature without the need to edit all the scenes. To do this I thought I could use a global variable with tonumber.  However I cannot get any syntax to work and allow the scene to save. Can anyone advise me on whether this is possible please. I’m very new to this. 
 

This is the criteria where I want to replace the 18 with a variable that I can maintain in global variables. I created a variable called MHtempWD with a value of 18. I tried to replace the value = 18 with value = tonumber (hub.getGlobalVariable("MHtempWD"'))

 

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[cag014 731]

As far as I know there is no way to include variables in scene's condition.

As I see the temperature device is not a trigger for the scene, so...

I suggest just get the value of the temperature device inside your scenes.

 

if hub.getValue(103,"value)<=tonumber (hub.getGlobalVariable("MHtempWD"')) then

... your actions...

end

Compare to your global temperature limit and perform required actions.

 

 

Edited September 22, 2025 by cag014

[cag014 731]

I understand he needs <= globalVariable

In scene you have just two options "==" or  "!="

 

But maybe I am wrong

[11thNun-Facilities 1]

Thanks for the response. I am using a HCL3 lite. If I read the response correctly I can put this code in the actions section. I am using a time trigger and based on this time trigger then check the temperature. So if I understand it right I would leave the time trigger in the conditions and put the if statement in the actions. Then it would only perform the actions if the temperature was below the global variable. 

[11thNuneaton 0]

Thanks for the help. I have the concept working in this example. I triggered the event at a set time. Then used the if statement to tell me if it was above or below the variable

 

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