Vehicle door system

Unity Engine
1

Ok so i am new to unity,
and my issue can probably be sorted with simply but im on a big learning curve.

so i am making a fps and would like to be able to enter a helicopter i am using a asset store Helicopter controller.
and a enter vehicle script i found on the internet,

var helicopter : Transform;
    var player : Transform;
    var exitPoint : Transform;
    var doorTriggerLeft : Transform;
    var PlayerCamera : Camera;
    var HeliCamera : Camera;
    var isPlayerVisable : boolean;
     
    function Update (){
    if (Input.GetButtonDown("Fire1") isPlayerVisable){
    //Make player invisable and still standing
    player.gameObject.SetActiveRecursively(false);
    player.gameObject.active = false;
    // Parent player to ExitPoint
    player.parent = exitPoint.transform;
    player.transform.localPosition = Vector3(-1.5,2,0);
    //Parent playerParent to Heli
    exitPoint.parent = helicopter.transform;
    exitPoint.transform.localPosition = Vector3(-0.5,2,0);
    // Enable car as controllable object
    GameObject.Find("HeliNose").GetComponent("Helicontroller").enabled = true;
    PlayerCamera.enabled = false;
    HeliCamera.enabled = true;
    }
     
    else
    {
    if (Input.GetButtonDown("Fire1")){
    // Make Character visable again.
    player.gameObject.SetActiveRecursively(true);
    player.gameObject.active = true;
    // Unparent Player from everything.
    player.transform.parent = null;
    // Parent Exit Point to Door Trigger.
    exitPoint.parent = doorTriggerLeft.transform;
    // Disable Heli as a controllable
    GameObject.Find("HeliNose").GetComponent("HeliController").enabled = false;
    PlayerCamera.enabled = true;
    HeliCamera.enabled = false;
    }
    }
    }
     
    function OnTriggerEnter(Player : Collider) {
    isPlayerVisable = true;
    }
     
    function OnTriggerExit(Player : Collider) {
    isPlayerVisable = false;
    }

Varibles our,

Helicopter = Helicopter (Transform)
Player = (FristPersonController) (Transform)
Exit Point = HeliNose (Transform)
Door Trigger Left = HeliNose (Transform)
Player Camera = Fps Camera
Heli Camera = Heli Camera

i have this script attached to my FPS controller. var helicopter :

2

you haven’t said what the problem is so how can anyone help