Question Non-invocable member

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5.  
6. public class DoorRaycast : MonoBehaviour
7. {
8.     [SerializeField] private int rayLength = 5;
9.     [SerializeField] private LayerMask layerMaskInteract;
10.     [SerializeField] private string excludeLayerName = null;
11.  
12.     private MyDoorController raycastedObj;
13.  
14.     [SerializeField] private KeyCode openDoorKey = KeyCode.F;
15.  
16.     [SerializeField] private Image crosshair = null;
17.     private bool isCrosshairActive;
18.     private bool doOnce;
19.  
20.     private const string interactableTag = "InteractableObject";
21.  
22.     private void Update()
23.     {
24.         RaycastHit hit;
25.         Vector3 fwd = transform.TransformDirection(Vector3.forward);
26.  
27.         int mask = 1 << LayerMask.NameToLayer(excludeLayerName) | layerMaskInteract.value;
28.  
29.         if(Physics.Raycast(transform.position, fwd, out hit, rayLength, mask))
30.         {
31.             if(hit.collider.CompareTag(interactableTag))
32.             {
33.                 if(!doOnce)
34.                 {
35.                     raycastedObj = hit.collider.gameObject.GetComponent<MyDoorController>();
36.                     CrosshairChange(true);
37.                 }
38.  
39.                 isCrosshairActive = true;
40.                 doOnce = true;
41.  
42.                 if (Input.GetKeyDown(openDoorKey))
43.                 {
44.                     raycastedObj.PlayAnimation();
45.                 }
46.             }
47.         }
48.  
49.         else
50.         {
51.             if(isCrosshairActive)
52.             {
53.                 CrosshairChange(false);
54.                 doOnce(false);
55.             }
56.         }
57.        
58.     }
59.  
60.     void CrosshairChange(bool on)
61.     {
62.         if (on && !doOnce)
63.         {
64.             crosshair.color = Color.red;
65.         }
66.         else
67.         {
68.             crosshair.color = Color.white;
69.             isCrosshairActive = false;
70.         }
71.     }
72. }
73.  

im pretty new to c# , im trying to make a interactable door and i keep getting this error any fixes?

Non-invocable member 'DoorRaycast.doOnce' cannot be used like a method.

 

You are trying to invoke doOnce as if it was a method, but doOnce is a field. If you want to set it to false, do it as you did it on the line 40:

doOnce = false;

 

THANK YOU SO MUCH <33