If it’s only controlling Z wave devices, you’re doing it through direct association. Instead, you want to use it like a “button controller” and associate the hub to it in that Association group and then you should be able to use it like a button controller. But that all depends on the DTH, so we need to know the exact DTH.
Because I rely on text to speech, I can’t really help you navigate the code in the IDE, but someone else should be able to.
The following DTH will let you control zigbee devices from the double tap
[OBSOLETE] Jasco/GE Z-Wave Plus On/Off Switch (14291) With Double-Tap and Associations
It will work. The double tap actions show up as a button in other apps. It sounds like what you were doing was setting up associations, which is different. I don’t use WebCore but in Smart Lighting when I select the switch, it shows me two available buttons. Button 1 is double tap up/on and Button 2 is double tap down/off.