Question XR Simple Interactable - "On Activate" Usage

Hi, I am working on VR Dashboard. I have a simple game object (should work as button) with "XR Simple Interactable" script attached on it. When I run this project I am able to trigger "On Hover Enter", "On Hover Exit" and even "On Select Enter", but for some reason I am not able to trigger "On Activate". Am I missing something ? What is the correct way to trigger this event ?

 

I had accidentally pressed both a trigger and a grip buttons on my Oculus Quest 2 and as I see the event was fired. This works both with XR Device Simulator (should be pressed shift+G and mouse left button) and in the real device trigger + grip. Only I can't figured out how to connect that only with a trigger button...
But with UI Button everything looks ok (works just with a trigger button).

Aha, and from the docs: "Activation is an extra action, typically mapped to a button or trigger that affects the currently selected object." (https://docs.unity3d.com/Packages/com.unity.xr.interaction.toolkit@1.0/manual/index.html#setup)

 

as @eugenner said to fire the event you should select the interactable first, which should be done by holding the grip button. But you can make the selected state happen when you hover over the object in XR Ray Interactor settings. You need to tick the Hover to Select option to enable object selection when you hover it. In this case, the activated event will be fired when you hover over the interactable and press the trigger.