the ball(Player) in roll a ball tutorial won't move

I am following the tutorial exactly

here is my code

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.InputSystem;
 
 public class PlayerController : MonoBehaviour
 {
     public float speed = 0;
 
     private Rigidbody rb;
 
     private float movementX;
     private float movementY;
 
     // Start is called before the first frame update
     void Start()
     {
         rb = GetComponent<Rigidbody>();
     }
 
     private void OnMove(InputValue movementValue)
     {
         Vector2 movementVector = movementValue.Get<Vector2>();
 
         movementX = movementVector.x;
         movementY = movementVector.y;
          Debug.Log("I am called!!!!!!!!!!!!!");
     }
 
     private void FixedUpdate()
     {
         Debug.Log("movementX = " + movementX);
         Debug.Log("movementY = " + movementY);
         Vector3 movement = new Vector3(movementX, 0.0f, movementY);
 
         rb.AddForce(movement * speed);
         
     }
 
 }

I found that the movementX and movementY are always 0, w$$anonymous$$ch mean the editor do not receive my input(left, right, up, down as well as WSAD), and seems the the OnMove function is not called

Anyone has idea about t$$anonymous$$s, I am new to Unity