Builded .apk index numbers are changed

So I tried to test my game in an android device. it is simple matching puzzle app that I'm working on. there are three lists generated automatically through code. one list for pieces, one list for their correct places and one for pieces initial positions. It works great on unity play mode but when I have builded the app correct places' index values are changed. I think something needs to be changed in build settings but I don't know which one. these are the pictures. first one is about start scene which everything is perfect and second one is the end position which game says correct but it is not.

here is the code;

 using UnityEngine;
 using System.Collections;
 using System.Linq;
 using System.Collections.Generic;
 public class MouseD : MonoBehaviour{
 
         public float distanceToEndPos = 1,speed = 1;
         public List<GameObject> objects = new List<GameObject>();
         List<Vector2> initialPosition = new List<Vector2>();
         List<Vector2> desiredPosition = new List<Vector2>();
         public GameMan _GameMan;
         List<bool> isPlaced = new List<bool>();
         Vector3 mousePos;
         Transform curObj;
         int curIndex;
         bool isDraging = false;
         public Animator animator;
         public ParticleSystem particlem;
         public ParticleSystem endSceneParticle;
         public AudioSource audSource;
         public AudioClip[] correct;
         public AudioClip clik;
         public AudioClip offClik;
 
         void Awake(){
             particlem.Stop();
             endSceneParticle.Stop();
         }
         
         void Start(){
             
                 objects.AddRange(GameObject.FindGameObjectsWithTag("DragAndDropObjects"));
                 foreach(GameObject g in objects){
                     initialPosition.Add(g.transform.position);
                     isPlaced.Add(false);
                 }
                 GameObject[] desObj = GameObject.FindGameObjectsWithTag("DragAndDropEndPos");
                 foreach(GameObject g in desObj){
                     desiredPosition.Add(g.transform.position);
                 }
         }
         void Update(){
             mousePos = GetMousePos();
             if(!isDraging){
                 GetRayCast();
             }
             if(isDraging){
                 DragAndDrop();
             }
             if(isPlaced.All(x => x)){
                 // Debug.Log("Next Level // Updating Event");
             }
         }
         public void GetRayCast(){
             RaycastHit2D hit = Physics2D.Raycast(new Vector2(mousePos.x,mousePos.y),Vector2.one);
             if(hit.collider != null && Input.GetMouseButtonDown(0) && hit.transform.tag == "DragAndDropObjects"){
                 for(int i = 0; i<objects.Count;i++){
                     if(hit.collider != null && Input.GetMouseButtonDown(0) && hit.transform.gameObject == objects[i] && !isPlaced[i]){
                         curIndex = i;
                         curObj = objects[i].transform;
                         isDraging = true;
                         audSource.clip= clik;
                         audSource.Play();
                     }
                 }
             }
         }
         
         public Vector3 GetMousePos(){
             Vector3 mp = new Vector3();
             mp = Camera.main.ScreenToWorldPoint(Input.mousePosition);
             return new Vector3(mp.x,mp.y,0);
         }
         public void DragAndDrop(){
             if(curObj != null){
                 if(Input.GetMouseButton(0)){
                     curObj.position = Vector3.Lerp(curObj.position,mousePos,0.1f);
                    
                     
                 }
                 if(Input.GetMouseButtonUp(0)){
                     
                     if(Vector2.Distance(mousePos,desiredPosition[curIndex]) <= distanceToEndPos){ 
                         audSource.clip= offClik;
                         audSource.Play();                       
                         StartCoroutine(SetLerpPos(desiredPosition[curIndex],curObj));
                         curObj = null;
                         isPlaced[curIndex] = true;
                         
                         
                         if(isPlaced.All(x => x)){
                             audSource.clip= correct[Random.Range(0, correct.Length)];
                             audSource.Play();
                             particlem.Play();
                            /*  StartCoroutine(routine: EndParticle ());
                             StartCoroutine(routine: FadeWait ());*/
                             StartCoroutine(routine: EndScene ());
                             
                             Debug.Log("Next Level // Single Event");
                         }
 
                     }else{
                     audSource.clip= offClik;
                     audSource.Play();
                         StartCoroutine(SetLerpPos(initialPosition[curIndex],curObj));
                         curObj = null;
                     }
                 }
             }
         }
         IEnumerator SetLerpPos(Vector3 endPos,Transform t)
             {
         
             float elapsedTime = 0;
         
             while (elapsedTime < speed)
             {
                 Vector3 startPos = t.position;
                 t.position = Vector3.Lerp(startPos, endPos, (elapsedTime / speed));
                 elapsedTime += Time.deltaTime;
                 if(elapsedTime>= speed || Vector3.Distance(t.position,endPos) <= 0.001){
                     t.position = endPos;
                     isDraging = false;
                     yield break;
                 }else{
                     yield return null;
                 }
             }
         }
         private IEnumerator EndScene()
      {
          yield return new WaitForSeconds(.5f);
          endSceneParticle.Play();
  
          yield return new WaitForSeconds(5.5f);
          animator.SetTrigger("Fade_out");
  
          yield return new WaitForSeconds(2f);
          _GameMan.LoadNextScene();
      }
 }