@dheat , @LarsenTech and @millerstevew , the issue is actually not the automation but the default configuration of the switch. The Zen72 by default has scene control disabled. As such, your double tap events don’t fire a central scene event.
In the config for the switch, set Scene Control to Enable and try again. It should work.
@IOT_Ninja , might be worth adding a comment to the main post about this.