current brightness/volume level variable

Hi! Back after 5 years with another obscure question lol

I have created a key press combination (middle button + scroll right/left) on my MX Master 4 to adjust brightness level. Similar concept for volume adjustment.

I am now trying to add a haptic feedback to the workflow but I don't want it to trigger when volume/brightness is at 0% or 100%. I have looked into 'configure condition' section but cannot find a variable that returns the current volume/brightness level.

Does this functionality not exist?

Thanks