Что не так в коде?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class PlayerController : MonoBehaviour
{
public float speed = 1f;

// Start is called before the first frame update
void Start()
{

}

// Update is called once per frame
void Update()
{
float movement = Input.GetAxis("Horizontal");
transform.position += new Vector3(movement, 0, 0) * speed * Time.deltaTime;
}
}