How to get multiple value from Autocomplete TextBox1 and use it in TextBox2

I have 2 Autocomplete Textbox TextBox1 and TextBox2. On TextBox1 i displayed pid value from my job table. On my job table i have 3 column namely id, pid and diereferenceno.

However the diereferenceno is the same thing as the id no in the die table. what i want is to select pid and diereferenceno though the diereferenceno will not be visible in TextBox1, meaning the pid will autocomplete in TextBox1 but i will use the associated diereferenceno of the pid in Autocomplete Textbox1 to Autocomplete associated diereferenceno in Textbox2. 

My Code

<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<link href="http://code.jquery.com/ui/1.11.4/themes/ui-lightness/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.10.2.js"></script>
<script type="text/javascript" src="http://code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
<script type="text/javascript">   
    $(function () {
        SearchText();
        SearchText3();     
    });
    function SearchText() {
        $(".autosuggest").autocomplete({
            source: function (request, response) {
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
                    url: "Order.aspx/GetAutoCompleteData",
                    data: "{ 'pid': '" + request.term + "'}",
                    dataType: "json",
                    success: function (data) {
                        if (data.d.length > 0) {
                            response($.map(data.d, function (item) {
                                return {
                                    label: item.split('/')[0],
                                    val: item.split('/')[1]
                                }
                            }));
                        }
                        else {
                            response([{ label: 'No Records Found', val: -1}]);
                        }
                    },
                    error: function (result) {
                        alert("Error");
                    }
                });
            },
            select: function (event, ui) {
                if (ui.item.val == -1) {
                    return false;
                }
                $('[id*=hfPId]').val(ui.item.val);
            }
        });
    }
 


    $(function () {
        SearchText31();
    });
    function SearchText31() {

        $(".autosuggest31").autocomplete({
            source: function (request, response) {
                $.ajax({
                    type: "POST",
                    contentType: "application/json; charset=utf-8",
                    url: "Order.aspx/GetAutoCompleteData31",
                    data: "{ 'embid': '" + request.term + "', diereferneceno: '" + $(".autosuggest").val() + "'}",
                    dataType: "json",
                    success: function (data) {
                        if (data.d.length > 0) {
                            response($.map(data.d, function (item) {
                                return {
                                    label: item.split('/')[0],
                                    val: item.split('/')[1]
                                }
                            }));
                        }
                        else {
                            response([{ label: 'No Records Found', val: -1}]);
                        }
                    },
                    error: function (result) {
                        alert(result.responseText);
                    }
                });
            },
            select: function (event, ui) {
                if (ui.item.val == -1) {
                    return false;
                }
            }
        });
    }
</script>

Please help

[WebMethod]
public static List<string> GetAutoCompleteData(string pid)
{
    List<string> result = new List<string>();
    using (SqlConnection con = new SqlConnection("Data Source=NERO-SIGBENU\\SQLEXPRESS01;Integrated Security=true;Initial Catalog=arpackaging;"))
    {
        using (SqlCommand cmd = new SqlCommand("select id,pid from job where pid LIKE '%'+@SearchText+'%'", con))
        {
            con.Open();
            cmd.Parameters.AddWithValue("@SearchText", pid);
            SqlDataReader dr = cmd.ExecuteReader();
            while (dr.Read())
            {
                result.Add(string.Format("{0}/{1}", dr["pid"], dr["id"]));
            }
            return result;
        }
    }
[WebMethod]
public static List<string> GetAutoCompleteData32(string dieno, string diereferneceno)
{
          List<string> result = new List<string>();
          using (SqlConnection con = new SqlConnection("Data Source=NERO-SIGBENU\\SQLEXPRESS01;Integrated Security=true;Initial Catalog=arpackaging;"))
          {
              using (SqlCommand cmd = new SqlCommand("select id,dieno from job_die where  id=@diereferneceno ", con))
              {
                  con.Open();
                  cmd.Parameters.AddWithValue("@SearchText32", dieno);
                  cmd.Parameters.AddWithValue("@id", diereferneceno);
                  SqlDataReader dr = cmd.ExecuteReader();
                  while (dr.Read())
                  {
                      result.Add(string.Format("{0}/{1}", dr["dieno"], dr["id"]));
                  }
                  return result;
              }
          }
}