Volume widget does not run the action button

[Shnub]

I second this. See use case here:

Mute / Unmute Widget

Ah, I managed to achieve what I wanted in the Mute widget → Volume slider direction using code from here. However, I still cannot get the slider to execute my AppleScript (or any AppleScript) in order to update the Mute widget.

This generally also concerns the display brightness slider.

I think the action should run immediately when the slider is touched—basically in parallel to the under-the-hood volume/brightness action. The user can then set "(Re-)Trigger assigned action after sliding" if repeated executions are desired. Executing only after letting go off the slider would mean that you could leave your finger on it for several seconds without anything being executed (e. g. a corresponding Mute widget being updated to show that volume isn't muted anymore), which would be confusing.