The image of the button disappears everytime when it is clicked. Where to find in this code? I'm just following tutorials on youtube and this guy speaks indonesia so I didn't kinda understand.

WordScramble.cs

[System.Serializable] public class Result { public int totalScore = 0; [Header("REF UI")] public Text textTime; public Text textTotalScore;

 [Header("REF RESULT SCREEN")]
 public GameObject resultCanvas;
 public Image[] stars;
 public Text textResultScore;
 public Text textInfo;

 [Space(10)]
 public Color starOn;
 public Color starOff;

 public void ShowResult()
 {
     textResultScore.text = totalScore.ToString();
     textInfo.text = "You finished " + WordScramble.main.words.Length + " words!";

     int allTimeLimit = WordScramble.main.GetAllTimeLimit();

     for (int i = 0; i < stars.Length; i++)
     {
         stars[i].color = totalScore >= allTimeLimit / (3 - i) ? starOn : starOff;


     }

     resultCanvas.SetActive(true);
 }

}

[System.Serializable] public class Word { public string word; [Header("leave empty if you want randomized")] public string desiredRandom;

 [Space(10)]
 public float timeLimit;

 public string GetString()
 {
     if (!string.IsNullOrEmpty (desiredRandom)) 
     {
         return desiredRandom;
     }

     string result = word;
     result = "";

    
     while (result == word) 
     {
         List<char> characters = new List<char> (word.ToCharArray ());
         while (characters.Count > 0)
         {
             int indexChar = Random.Range (0, characters.Count - 1);
             result += characters [indexChar];

             characters.RemoveAt (indexChar);
         }
     }


     return result;
 }

}

public class WordScramble : MonoBehaviour {

 public Word[] words;

 [Space(10)]
 public Result result;

 [Header("UI REFERENCE")]
 public GameObject wordCanvas;
 public CharObject prefab;
 public Transform container;
 public float space;
 public float lerpSpeed = 5;

 List<CharObject> charObjects = new List <CharObject>();
 CharObject firstSelected;

 public int currentWord;

 public static WordScramble main;

 public static float totalScore;

 void Awake()
 {
     main = this;
 }

 // Use this for initialization
 void Start () {
     ShowScramble (currentWord);
     result.textTotalScore.text = result.totalScore.ToString ();
 }
 
 // Update is called once per frame
 void Update () 
 {
     RepositionObject ();

     totalScore = Mathf.Lerp (totalScore, result.totalScore, Time.deltaTime * 5);
     result.textTotalScore.text = Mathf.RoundToInt (totalScore).ToString ();
 }

 public int GetAllTimeLimit()
 {
     float result = 0;
     foreach (Word w in words)
     {
         result += w.timeLimit / 2;

     }

     return Mathf.RoundToInt(result);
 }


 //<summary>
 //show word from collection with desired index
 //</summar>
 void RepositionObject()
 {
     if (charObjects.Count == 0)
     {
         return;
     }

     float center = (charObjects.Count - 1) / 2;
     for (int i = 0; i < charObjects.Count; i++) 
     {
         
         charObjects [i].rectTransform.anchoredPosition = Vector2.Lerp(charObjects[i].rectTransform.anchoredPosition, new Vector2 ((i - center) * space, 0), lerpSpeed * Time.deltaTime);
         charObjects [i].index = i;
     }
 }


 //Show a random word to the screen
 public void ShowScramble()
 {
     ShowScramble (Random.Range (0, words.Length - 1));

 }

     
 //show word from collection with desired index
 public void ShowScramble(int index)
 {
     charObjects.Clear ();
     foreach (Transform child in container) 
     {
         Destroy (child.gameObject);
     }


     //WORDS FINISHED
     //SHOW RESULT SCREEN
     if (index > words.Length - 1) 
     {
         result.ShowResult();
         wordCanvas.SetActive(false);
         //Debug.Log ("index out of range, please enter range between 0-" + (words.Length - 1).ToString());
         return;
     }

     char[] chars = words [index].GetString ().ToCharArray ();
     foreach (char c in chars) 
     {
         CharObject clone = Instantiate (prefab.gameObject).GetComponent<CharObject> ();
         clone.transform.SetParent (container);

         charObjects.Add (clone.Init (c));

     }

     currentWord = index;
     StartCoroutine (TimeLimit());
 }


 public void Swap (int indexA, int indexB)
 {
     CharObject tmpA = charObjects [indexA];

     charObjects [indexA] = charObjects [indexB];
     charObjects [indexB] = tmpA;

     charObjects [indexA].transform.SetAsLastSibling ();
     charObjects [indexB].transform.SetAsLastSibling ();

     CheckWord ();
 }




 public void Select(CharObject charObject)
 {
     if (firstSelected) 
     {
         Swap (firstSelected.index, charObject.index);

         //Unselected
         firstSelected.Select ();
         charObject.Select ();
     }
     else 
     {
         firstSelected = charObject;
     }
 }


 public void UnSelect()
 {
     firstSelected = null;
 }




 public void CheckWord()
 {
     StartCoroutine (CoCheckWord ());

 }




 IEnumerator CoCheckWord ()
 {

     yield return new WaitForSeconds (0.5f);
     string word = "";
     foreach (CharObject charObject in charObjects) 
     {
         word += charObject.character;
     }

     if (timeLimit <= 0) 
     {
         currentWord++;
         ShowScramble (currentWord);
         yield break;
     }

     if (word == words [currentWord].word) 
     {
         currentWord++;
         result.totalScore += Mathf.RoundToInt (timeLimit);

         //StopCoroutine (TimeLimit ());

         ShowScramble (currentWord);

     }

 }
     
 float timeLimit;
 IEnumerator TimeLimit()
 {
     timeLimit = words [currentWord].timeLimit;
     result.textTime.text = Mathf.RoundToInt (timeLimit).ToString ();

     int myWord = currentWord;

     yield return new WaitForSeconds (1);

     while (timeLimit > 0)
     {
         if (myWord != currentWord) { yield break; }

         timeLimit -= Time.deltaTime;
         result.textTime.text = Mathf.RoundToInt (timeLimit).ToString ();
         yield return null;
     }
         
     CheckWord ();
 }

}

/////////////////////////////////////////////////////////////////////////////////////////////

CharObject.cs

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

public class CharObject : MonoBehaviour {

 public char character;
 public Text text;
 public Image image;
 public RectTransform rectTransform;
 public int index;


 [Header("Appearance")]
 public Color normalColor;
 public Color selectedColor;


 bool isSelected = false;

 public CharObject Init (char c)
 {
     character = c;
     text.text = c.ToString ();
     gameObject.SetActive (true);
     return this;
 }

 public void Select()
 {
     isSelected = !isSelected;

     image.color = isSelected ? selectedColor : normalColor;
     if (isSelected) {
         WordScramble.main.Select (this);
     } else {
         WordScramble.main.UnSelect ();
     }
 }

}