void OnGUI()
    {
  GUI.Box(new Rect(0,0, Screen.width,Screen.height/5.5F), "");
    }

if (Input.GetMouseButton(0))
                 {
                 int count = 0;
                 int pos = 0;
                     if (hit.collider.gameObject.name.Contains(" GREENHIGH1 "))
                     {
                         foreach (GameObject GOBJ in HEXListOBJ)
                         {
                             count++;
                             if (hit.collider.gameObject.transform.position.x == GOBJ.transform.position.x && hit.collider.gameObject.transform.position.z == GOBJ.transform.position.z)
                             {
                    pos = count;
                    GOBJ.active = false; //так можно но элемент остается
                    HEXListHIGH.RemoveAt(pos - 1);// если так то ошибка, описание ниже
                             }

                         }