How to make automatic sliding door in Unity

I want to make an automatic sliding door in Unity. The idea is, there will be a door with a sensor area. If a player inside that sensor area, the door will open, and if the player left, the door closes.

To make this thing happened in Unity, I need to make a sensor script attached to a sensor object of that door. The object is simply a cube with a collider as it trigger and it has rigidbody to make the triggering works.

Here I wrote this script:

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

public class AutomaticDoor : MonoBehaviour
{
	
	public GameObject movingDoor;
	
	public float maximumOpening = 10f;
	public float maximumClosing = 0f;
	
	public float movementSpeed = 5f;
	
	bool playerIsHere;
	
    // Start is called before the first frame update
    void Start()
    {
        playerIsHere = false;
    }

    // Update is called once per frame
    void Update()
    {
        if(playerIsHere){
			if(movingDoor.transform.position.x < maximumOpening){
				movingDoor.transform.Translate(movementSpeed * Time.deltaTime, 0f, 0f);
			}
		}else{
			if(movingDoor.transform.position.x > maximumClosing){
				movingDoor.transform.Translate(-movementSpeed * Time.deltaTime, 0f, 0f);
			}
		}
		
		
    }
	
	private void OnTriggerEnter(Collider col){
		if(col.gameObject.tag == "Player"){
			playerIsHere = true;
		}
	}
	
	private void OnTriggerExit(Collider col){
		if(col.gameObject.tag == "Player"){
			playerIsHere = false;
		}
	}
}

You can watch how I did it in this video: