Changing bool of raycasthit.parent

Hello there!

I'm looking to change the bool of a raycasthit's parent.

Current Script:

 static var dTog : boolean;
 var hit : RaycastHit;
 
 function Update()
 {
     Debug.DrawRay (transform.position, transform.forward, Color.red);
     if(Physics.Raycast(transform.position, transform.forward, hit, 100.0))
     {
         
         if(hit.collider.CompareTag("button"))
         {
             if(Input.GetKeyDown(KeyCode.E))
             {
                 hit.transform.parent.thisD = !hit.transform.parent.thisD;
                 print("door is open/close");
         }
         }
     }
 }

Currently this gives me nothing but a "Enumerable 1 Error".

Is there anything you guys can see wrong in it? :)

I would appretiate the help greatly! Sincerely,

Bakos133