Не изменяется значение bool переменной

Во время игры в Unity хотим сделать: Когда score = 1 появлялся вопрос, VPR.active = true; но код ничего не делает, а если поставить false, то окно спокойно пропадает. В чём наша ошибка ? Внизу привожу три класса которые используются

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
public class GameControl : MonoBehaviour {

    public static GameControl instance;
    public GameObject gameOverText;
    public Text scoreText;
    public bool gameOver = false;
    public float scrollSpeed = -3f;

    public static int score = 0;

    // Use this for initialization
    void Awake () 
    {
        if (instance == null) {
            instance = this;
        } else if (instance != this)
        {
            Destroy (gameObject);
        }
    }

    // Update is called once per frame
    void Update()
    {
        if (gameOver == true && Input.GetMouseButtonDown (1)) 
        {
            SceneManager.LoadScene (SceneManager.GetActiveScene ().buildIndex);
        }
    }

    public void BirdScored()
    {
        if (gameOver) 
        {
            return;
        }
        score++;
        scoreText.text = "Score: " + score.ToString ();
    }
    public void BirdDied()
    {
        gameOverText.SetActive (true);
        gameOver = true;
    }
}




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

public class Taks : MonoBehaviour {

    public TextAsset All;
    string Text;
    public string TasK;
    public string Answers;
    public Text Tesk;
    public Text a1;
    public Text a2;
    public Text a3;
    public Text a4;
    public string True;
    // Use this for initialization
    void Start () 
    {
        Text = All.text;
        string[] s = Text.Split('/');
        TasK = s [0];
        Answers = s [1];
        True = s [2];
        Tesk.text = TasK;
        string[] A = Answers.Split (';');
        a1.text = A [0];
        a2.text = A [1];
        a3.text = A [2];
        a4.text = A [3];
    }
}


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

public class BTN_TXT : MonoBehaviour {

    public GameObject VPR;
    public Color gr;
    public Color fl;
    public Image th;
    public Text t;
    public Taks task;

    // Use this for initialization
    public void Start () 
    {

    }

    // Update is called once per frame
    public void Check () 
    {
        if (t.text == task.True) {
            th.color = gr;
            StartCoroutine (Wait ());
        } else {
            th.color = fl;
            StartCoroutine (Wait ());
            GameControl.instance.BirdDied ();
        }
    }

    IEnumerator Wait()
    {
            yield return new WaitForSeconds (2);
            VPR.active = false;
    }

    void Update(){
        if (GameControl.score == 1) {
            VPR.active = true;
        }
    }
}