key lock

using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using UnityEngine;
using UnityEngine.UI;

public class OpenGate : MonoBehaviour
{
    public bool haskey;
    public float TheDistance;
    public GameObject ActionDisplay;
    public GameObject ActionText1;
    public GameObject Gate;
    public AudioSource GateSound;

    void Update() {
        TheDistance = PlayerCasting.DistanceFromTarget;
    }

    void OnMouseOver ()
    {
        if (TheDistance < 3) {
        ActionDisplay.SetActive (true);
        ActionText1.SetActive (true);
        }
        if (Input.GetButtonDown("Action"))
        {
            if (TheDistance <= 3)
            {
                if (haskey = true)
                {
                    this.GetComponent<BoxCollider>().enabled = false;
                    ActionDisplay.SetActive(false);
                    ActionText1.SetActive(false);
                    Gate.GetComponet<Animation>().Play("OpenGate");
                    GateSound.Play();
                }
            }
        }
    }
    void OnMouseExit() {
        ActionDisplay.SetActive(false);
        ActionText1.SetActive(false);
    }
}