How to hide cube names from the Cube Selector on PivotClient initial load?

public Dictionary<string, object> InitializeClient(string action, string customObject, string clientParams)
 {
  OlapDataManager DataManager = null;
  DataManager = new OlapDataManager(connectionString);
  DataManager.SetCurrentReport(CreateOlapReport());
  var temp = olapClientHelper.GetJsonData(action, DataManager, clientParams);
  var temp2 = serializer.Deserialize<List<Dictionary<string, string>>>(temp["Cubes"].ToString());
  foreach (var item in temp2)
    {
     if (item["Valid_Cube_Name"] != DataManager.CurrentCubeName)
       {
          temp2.Remove(item); break;
       }
    }
   temp["Cubes"] = serializer.Serialize(temp2);
   return temp;
}

Public Function InitializeClient(action As String, customObject As String, clientParams As String) As Dictionary(Of String, Object)
 Dim DataManager As OlapDataManager = Nothing
 DataManager = New OlapDataManager(connectionString)
 DataManager.SetCurrentReport(CreateOlapReport())
 Dim temp = olapClientHelper.GetJsonData(action, DataManager, clientParams)
 Dim temp2 = serializer.Deserialize(Of List(Of Dictionary(Of String, String)))(temp("Cubes").ToString())
 For Each item As var In temp2
 If item("Valid_Cube_Name ") <> DataManager.CurrentCubeName Then
    temp2.Remove(item)
                Exit For
            End If
        Next
        temp("Cubes") = serializer.Serialize(temp2)
        Return temp
    End Function