Displaying AxisY in Right unsig Multiple Y-axes

hi,

i want to display AxisY in the right in the pic i have Axis Y wich is have green color i bind my chart programmatically this is my code 

 SqlConnection con = new SqlConnection(@"Data Source=.;Initial Catalog=DB_WEB_Q_TEL;Integrated Security=True");
            string req = "select time_tag,[ain_sebou|Niveau] as AIN_SEBOU_NIVEAU , [allal_fassi|Niveau]as ALLAL_FASSI_NIVEAU  from QTSW_DATA1 where time_tag between ('01/01/2015') AND ('20/01/2015')";
            DataSet DS = new DataSet();
            con.Open();
            if (DS.Tables.Contains("TRChart"))
            {
                DS.Tables.Remove("TRChart");
            }
            SqlDataAdapter da = new SqlDataAdapter(req, con);
            da.Fill(DS, "TRChart");
            con.Close();

            RadHtmlChart chart = new RadHtmlChart();

            chart.DataSource = DS.Tables["TRChart"];
            chart.DataBind();

ScatterLineSeries SL = new ScatterLineSeries();
            SL.DataFieldX = "time_tag";
            SL.DataFieldY = "AIN_SEBOU_NIVEAU";
            SL.MarkersAppearance.Visible = false;

            SL.TooltipsAppearance.DataFormatString = " {1} at {0:dd-MM-yyyy HH:mm}";
            SL.LabelsAppearance.Visible = false;
            chart.PlotArea.XAxis.LabelsAppearance.DataFormatString = "{0:dd-MM-yyyy HH:mm}";
            chart.PlotArea.XAxis.LabelsAppearance.RotationAngle = 90;

            chart.PlotArea.XAxis.BaseUnit = Telerik.Web.UI.HtmlChart.DateTimeBaseUnit.Days;
            chart.PlotArea.XAxis.DataLabelsField = "time_tag";
            chart.PlotArea.Series.Add(SL);
           

            // serie2
            ScatterLineSeries SL1 = new ScatterLineSeries();
            SL1.AxisName = "Additional";
            SL1.DataFieldX = "time_tag";
            SL1.DataFieldY = "ALLAL_FASSI_NIVEAU";
            SL1.MarkersAppearance.Visible = false;

            SL1.TooltipsAppearance.DataFormatString = " {1} at {0:dd-MM-yyyy HH:mm}";
            SL1.LabelsAppearance.Visible = false;
            chart.PlotArea.XAxis.LabelsAppearance.DataFormatString = "{0:dd-MM-yyyy HH:mm}";
            chart.PlotArea.XAxis.LabelsAppearance.RotationAngle = 90;

            chart.PlotArea.XAxis.BaseUnit = Telerik.Web.UI.HtmlChart.DateTimeBaseUnit.Days;

            chart.PlotArea.Series.Add(SL1);
            //chart.PlotArea.XAxis.Visible = false;
            AxisY ax = new AxisY();
            ax.Name = "Additional";
            ax.Color = Color.Green;
            ax.Width = 2;

          
            chart.PlotArea.AdditionalYAxes.Add(ax);

pls i need help very quickly