Question New input system touch (vector2) to collide with 3d objects with AR Fundation

Hello Unity members,
I'm having trouble to do the touch of a object with the new input system, before with the OnMouseDown in each object i could detect it, and by the name i could get the object that had the collision, but now what can i do with the new Input system?
I'm using AR fundation, and AR Camera, maybe it's that?
On Android platform.

var touchPosition = context.ReadValue<Vector2>();
var world = Camera.main.ScreenToViewportPoint(touchPosition);
Ray ray = Camera.main.ViewportPointToRay(world);
RaycastHit raycastHit;
if (Physics.Raycast(ray, out raycastHit))
{
Debug.LogError("I'm looking at " + raycastHit.transform.name);
}