public string GetCharDatas(string myJsonData)
        {
            string[] seletedStrings = myJsonData.JsonPickArray("selectedLines");
            ArrayList productLineAndlableNames = new ArrayList();
            foreach (var item in seletedStrings)
            {
                string productLineAndlableName = item.JsonPick("VariableName");
                productLineAndlableNames.Add(productLineAndlableName);
            }
            CustomAnalyseItemService service = new CustomAnalyseItemService();
            DataTable dt = service.GetProcessDatas(productLineAndlableNames);

            string result = DataTable2ChartJson.ToChartJson(dt, "Time", "T", "100");

            return result;
        }