Entering and Exiting Vehicals

Now I know that this question gets asked a lot, but my script simply refuses to work properly. I have this script through some tuts, but it won't work like it will in those. Here is my script, I hope that somebody can help me out. Thanks!

 // arrays
 var myCams : Camera[];
 var mySeats : Transform[];
 
 // timer
 var timer : int = 3;
 
 // ship
 var ship : GameObject;
 
 // active control vars
 private var state : int = -1;
 private var count : int = 0;
 
 // player position & cam
 var player_object : Transform;
 var player_camera : Camera;
 var old_position : Vector3;
 
 function Update()
 {
     if (Input.GetAxis ("e"))
     {
         if (state == -1 && timer < 0)
         {
             for (var index : int = 0; index < mySeats.Length; index++)
             {
                 if(Vector3.Distance (mySeats[index].position, player_object.position ) < 3 )
                 {
                     // deactivate first person camera
                     player_camera.enabled = false;
 
                     // activate other camera
                     myCams[index].enabled = true;
 
                     // now sitting at
                     state = index;
 
                     print (index);
 
                     // tell turret / driving scripts they can activate
                     BroadcastMessage ("Activate_Turret", state);
 
                     // reset timer
                     timer = 20;
 
                     // parent user to seat
                     player_object.parent = mySeats[index];
 
                     old_position = player_object.transform.localPosition;
 
                     player_object.transform.localPosition = Vector3(0, 0, 0);
 
                     // break out of the for loop cause we have already selected one seat
                     break;
                 }
             }
         }
 
         // get out
         if (state > -1 && timer < 0)
         {
             // we are now first person again
             state = -1;
 
             // reset timer
             timer = 30;
 
             // tell turret / driving scripts they can deactivate
             BroadcastMessage ("Activate_Turret", -1);
 
             // put back relitave to where the player entered the vehicle/seat
             player_object.transform.localPosition = old_position;
 
             // Detaches the transform from its parent.
             transform.parent = null;
 
             // reactivare first person camera
             player_camera.GetComponent("Camera").enabled = true;
 
             // disable all other cameras
             for (var thisCam in myCams)
             {
                 thisCam.GetComponent("Camera").enabled = false;
             }
         }
     }
 
     // fix speed
     timer = timer - 1;
 }