Removing and replacing a Instantiated grid object

  public GameObject $$anonymous$$ine;
     public GameObject BlankSpace;
     public CheckBomb CheckBomb;
     
     public int gridX;
     public int gridY;
     public int spacing = 1;
     public GameObject[] GridFill = new GameObject[100];
     Vector3 OriginalPos;
 
     void Start()
     {
         CheckBomb = BlankSpace.GetComponent<CheckBomb>();
 
         for (var y = 0; y < gridY; y++)
         {
             for (var x = 0; x < gridX; x++)
             {
                 CheckBomb.isBomb = Random.value < 0.15;
                 Instantiate(GridFill[Random.Range(0, GridFill.Length)], new Vector3(x, y) * spacing, Quaternion.identity);
                 LoadGameObject();   
             }
         }
 
         
     }    
     public void LoadGameObject()
     {
         if (CheckBomb.isBomb)
         {
             Instantiate($$anonymous$$ine, new Vector3(gridX, gridY), Quaternion.identity);
         }
     }