Set brightness from a variable and not just %

[dudman]

Is this a feature relevant to companion itself, and not a module?

• [x] I believe this to be a feature for companion, not a module

Is there an existing issue for this?

• [x] I have searched the existing issues

Describe the feature

I'd like to use a $variable as the % to set surface Brightness, this dosn't seem possible ?

Usecases

I'd use this for changing the brightness nigh/day, and as part of screen saver. Thanks

[torowi]

It would be great if the current brightness value were also available as a variable.

[dnmeid]

related #2345