Unity'de sahne geçişi yapılmıyor

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

public class SceneChanger : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        // ...
    }

    // Update is called once per frame
    void Update()
    {
        // ...
    }

    private void OnCollisionEnter(Collision collision)
    {
        if (collision.gameObject.tag == "SampleScreen")
        {
            SceneManager.LoadScene("Room1");
        }
    }
}