How can i get the oculus quest 2 input in unity?

I use oculus quest 2 and only install the asset of Oculus XR Plugin and XR Interaction Tookit.
Xr interaction debugger can only get my position and axis from my hand. When I press all button on the controller and nothing happend. The value of all button won’t change…What is the problem?

Thankyou for help.

Ensure that Oculus Integration package is imported in your project.

using UnityEngine;
using UnityEngine.SceneManagement;
 public class SceneLoader : MonoBehaviour {
     void Update() {
         if (OVRInput.Get(OVRInput.Button.Two))

Refer to Input for Oculus to know more about the Oculus controllers.