Choose item from list

Unity Engine
1

Hi, i just made a script for clan manager, how can i choose an item from Clanlist after i create clan?

public class Clan : MonoBehaviour
{
    public GameObject ClanContainer;
    public GameObject ClanMembersContainer;
    public GameObject ClanDescriptionContainer;

    public GameObject ClanListPrefab;
    public GameObject ClanMembersPrefab;
    public GameObject ClanDescriptionPrefab;

    public InputField ClanName;
    public InputField ClanDescripiton;
    public GameObject ClanPanel;

    public GameObject OpenCreateClan;

    List<string> ClanList = new List<string>();
    List<string> ClanMembers = new List<string>();
    string[] Ranks = { "Founder", "Leader", "Member", "Trial" };
    void Start()
    {
        ClanList.Add("Admins");
        ClanMembers.Add("Ibrahim");
        //ClanList
        GameObject go = Instantiate(ClanListPrefab, ClanContainer.transform) as GameObject;
        go.transform.Find("Clan").GetComponentInChildren<Text>().text = ClanList[0];
        go.transform.Find("PlayersCount").GetComponentInChildren<Text>().text = ClanMembers.Count.ToString() + "/50";
        go.transform.Find("Clan").GetComponentInChildren<Text>().color = Color.red;
    }
    public void CreateClan()
    {
        if (ClanName.text == "Admins" || ClanName.text == "Staff")
        {
            Debug.Log("You can't Create clan with this name");
        } else if (ClanList.Contains(ClanName.text))
        {
            Debug.Log("Exist clan name");
        }else if(ClanName.text == "")
        {
            Debug.Log("Plese write clan name");
        }
        else
        {
            ClanList.Add(ClanName.text);
            GameObject Name = Instantiate(ClanListPrefab, ClanContainer.transform) as GameObject;
            Name.transform.Find("Clan").GetComponentInChildren<Text>().text = ClanName.text;

            GameObject Descripition = Instantiate(ClanDescriptionPrefab, ClanDescriptionContainer.transform) as GameObject;
            Descripition.transform.Find("ClanName").GetComponentInChildren<Text>().text = ClanName.text;
            Descripition.transform.Find("ClanDescription").GetComponentInChildren<Text>().text = ClanDescripiton.text;

            GameObject ClanMember = Instantiate(ClanMembersPrefab, ClanMembersContainer.transform) as GameObject;
            ClanMember.transform.Find("NameTxt").GetComponentInChildren<Text>().text = "Ibrahim";
            ClanMember.transform.Find("RankTxt").GetComponentInChildren<Text>().text = Ranks[0];
            ClanPanel.SetActive(true);
            OpenCreateClan.SetActive(false);
        }
    }
}
2

You’re already choosing an item in a list on line 27.

3

@Boz0r Yes, I wrote these codes for testing,
When I create a clan everything is fine

1920×976 108 KB

but when I create another clan this happens
1920×976 113 KB