Can you write a value to a variable that lives in a device?

Questions
#1

I want to store a value in a variable that lives in a device when I click a button. Is this possible and how?

Thanks

#2

Yes, this is possible. When you configure your Button’s DataAction, simply click the ... button in the Value box, the choose your source device variable.

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#3

Awesome. Thanks! I’m trying to see if I can create a multi-mode button (for HVAC), which includes Heat, Cool, Auto, and a separate on/off button. The idea I had was to store the current HVAC mode (if button is on) to a variable that would be used to restore the HVAC mode if the on/off button was turned on again).