how do i make the door close after i open it with keypad

 using UnityEngine;
 using System.Collections;
 
 public class Keypad : MonoBehaviour
 {
 
     public string curPassword = "12345";
     public string input;
     public bool onTrigger;
     public bool doorOpen;
     public bool keypadScreen;
     public Transform doorHinge;
     public GameObject bodka;
     public AudioSource Vrzganie;
 
 
 
     void OnTriggerEnter(Collider other)
     {
         onTrigger = true;
 
     }
 
     void OnTriggerExit(Collider other)
     {
         onTrigger = false;
         keypadScreen = false;
         input = "";
     }
 
     void Update()
     {
 
         if (Input.GetKeyDown(KeyCode.Alpha0) || Input.GetKeyDown(KeyCode.Keypad0))
         {
             input = input + "0";
         }
 
 
         if (Input.GetKeyDown(KeyCode.Alpha1) || Input.GetKeyDown(KeyCode.Keypad1))
         {
             input = input + "1";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha2) || Input.GetKeyDown(KeyCode.Keypad2))
         {
             input = input + "2";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha3) || Input.GetKeyDown(KeyCode.Keypad3))
         {
             input = input + "3";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha4) || Input.GetKeyDown(KeyCode.Keypad4))
         {
             input = input + "4";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha5) || Input.GetKeyDown(KeyCode.Keypad5))
         {
             input = input + "5";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha6) || Input.GetKeyDown(KeyCode.Keypad6))
         {
             input = input + "6";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha7) || Input.GetKeyDown(KeyCode.Keypad7))
         {
             input = input + "7";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha8) || Input.GetKeyDown(KeyCode.Keypad8))
         {
             input = input + "8";
         }
 
         if (Input.GetKeyDown(KeyCode.Alpha9) || Input.GetKeyDown(KeyCode.Keypad9))
         {
             input = input + "9";
         }
 
 
 
         if (input == curPassword)
         {
             doorOpen = true;
         }
 
         if (doorOpen)
         {
             var newRot = Quaternion.RotateTowards(doorHinge.rotation, Quaternion.Euler(0.0f, 90.0f, 0.0f), Time.deltaTime * 250);
             doorHinge.rotation = newRot;
 
             bodka.SetActive(false);
             Vrzganie.Play();
 
 
         }
     }
 
     void OnGUI()
     {
         if (!doorOpen)
         {
             if (onTrigger)
             {
                 GUI.Box(new Rect(0, 0, 400, 50), "'E' to open keypad");
 
                 if (Input.GetKeyDown(KeyCode.E))
                 {
                     keypadScreen = true;
                     onTrigger = false;
                 }
             }
 
             if (keypadScreen)
             {
                 GUI.Box(new Rect(0, 0, 640, 70), "");
                 GUI.Box(new Rect(10, 10, 620, 50), input);
                 GUI.Label(new Rect(10, 60, 200, 50), "'Esc' to exit");
 
                 if (Input.GetKeyDown(KeyCode.Escape))
                 {
 
                     keypadScreen = false;
                 }
 
 
             }
         }
     }
 }