Finding the hand tracking cursor using surfaceHit

I'm having trouble understanding how to use the surfaceHit and collisionInfo outlined in Meta's documentation. If I'm not confused this will find the vector3 of the circle hand tracking cursor.

I am currently using the all-in-one interactivity SDK (XR, Hand Tracking, Virtual Hands, and Ray Indicator), the ray indicator has a cube that shows the hand tracking circle cursor wherever my hand is pointing on the cube. I am simply trying to find where that cursor is the moment the player pinches their fingers. 

I'm very new to Meta XR so if I'm trying to do this the wrong way please let me know, anything is helpful!
I've attached images of the documentation or here is the link