How to trigger a flow using the "a variable changed" card?

flexy

I am in the middle of trying to set up Sonos to my liking. Without using voice control for Homey, because Homey has a hard time understanding me when I play music on the Sonos.

I use the BetterLogic Slider to adjust Sonos Volume. But sometimes someone uses the real buttons on the Sonos to adjust the volume. I would like to update the BL Slider on my phone to the right volumesetting. I tried to do that by using a Logic card "a variable changed" and I used the Sonos Tab (#Set Volume) as the trigger. My flow works when I test it (to be sure I made Homey give my a vocal heads up as well ), but in reality the flow never gets triggered and never adjusts my phone visual slider.

My question: how can i trigger the flow?

Warm regards,
Ann

Rocodamelshe

My guess is u have to set the variable for urself in another variable as u cannot use tags in 'a variable changed'
So make another variable and set the Sonos variable in there.
Then u can use 'a variable changed' and type the name of that variable.

flexy

Rocodamelshe said:

My guess is u have to set the variable for urself in another variable as u cannot use tags in 'a variable changed'
So make another variable and set the Sonos variable in there.
Then u can use 'a variable changed' and type the name of that variable.

Thank you for your idea. 
Then I will need to check it constantly? Like every x seconds to avoid a discrepancy?

Rocodamelshe

Just with the trigger: A variable changed.

glijie

Rocodamelshe said:

Just with the trigger: A variable changed.

or a variable is set

flexy

Rocodamelshe said:

My guess is u have to set the variable for urself in another variable as u cannot use tags in 'a variable changed'
So make another variable and set the Sonos variable in there.
Then u can use 'a variable changed' and type the name of that variable.

But still i would need to move the original value (from the tag) into my new variable constantly, or do i miss something here?
Wouldn't it be possible to get a "the volume changed" card for Sonos? (just like already exists for many other devices if something changes there)