Detect VR motion controller interacting with button

Hi,

I want to vibrate the controller when it starts to hover over clickable button and I am struggiling. I can’t see any way to detect which widget interaction started on hover event in widget.

Widget interaction has OnHoverdWidgetChanged - but that fires on whole widget hover - not specific button. I noticed it in other games and even in Oculus system UI so I guess thats doable (and probably easy to implement but I struggle quite hard :D)