Multiple series on Chart

[Ebenezer]

 I am trying to get two series on a chart similar like what is in this link
 http://www.telerik.com/help/reporting/understandingelementsseriesseriesproperties.html, but only series 2 is showing up. If I delete the code for series 2. series1 shows up correctly. I am not sure what I am missing. Any help will be appreciated. Below is my code and attached is an image of what I am getting now.
private void chart1_NeedDataSource(object sender, EventArgs e)
        {
            DataSet ds;
            Telerik.Reporting.Processing.Chart chart;
            DateTime stepDate;
            DateTime stepDateNew;
            string interval, AverageName, AverageNameNew, pointLabel, pointLabelnew, interval2;
            int average, Child1, Child2, step, statusId;

            if (_series == null || _seriesNew == null)
            {

                chart = sender as Telerik.Reporting.Processing.Chart;

                ds = CreateChartDataSet();

                DataView view = ds.Tables[0].DefaultView;

                Telerik.Reporting.Chart chartDef = (Telerik.Reporting.Chart)chart.ItemDefinition;
                _series = new Telerik.Reporting.Charting.ChartSeries();
                _seriesNew = new Telerik.Reporting.Charting.ChartSeries();

                AverageName = string.Empty;
                AverageNameNew = string.Empty;

                SetXAxisRange(view);

                foreach (DataRowView rowView in view)
                {
                    statusId = (int)rowView["ID"];
                    step = int.Parse(rowView["Step"].ToString());
                    average = (int)rowView["average"];
                    interval = rowView["Interval"].ToString();
                    interval2 = rowView["IntervalNew"].ToString();
                    handlingPlanName = rowView["AverageName"].ToString();
                    handlingPlanNameNew = rowView["AverageNameNew"].ToString();
                    likelihood = (int)rowView["Child1"];
                    consequence = (int)rowView["Child2"];                   
                    if (interval != interval2 )
                    {
                        DateTime.TryParse(interval, out stepDate);
                        string str = null;
                        str += stepDate.ToString("MM/dd/yy");
                        pointLabel = str;
                    }

                    else
                        pointLabel = string.Empty;
                     
                    if (interval != interval2)
                    {
                        DateTime.TryParse(interval2, out stepDateNew);
                        string strNew = null;
                        strNew += stepDateNew.ToString("MM/dd/yy");
                        pointLabelnew = strNew;
                    }
                    else
                        pointLabelnew = string.Empty;


                    Telerik.Reporting.Charting.ChartSeriesItem seriesItem = CreateSeriesItem(pointLabel, average, statusId);

                    _series.AddItem(seriesItem);


                    Telerik.Reporting.Charting.ChartSeriesItem seriesItemNew = CreateSeriesItemNew(pointLabelnew, average, statusId);

                    _seriesNew.AddItem(seriesItemNew);
                    //}
                    foreach (DataRow dtrow in ds.Tables[0].Rows)
                    {

                        if (string.IsNullOrEmpty(handlingPlanName) && DateTime.TryParse(interval, out stepDate))
                            handlingPlanName = "New Report to Check Children's age";                                             

                    }
                    _series.Appearance.LineSeriesAppearance.Color = Color.Teal;
                    _series.Name = handlingPlanName;
                    _series.Type = ChartSeriesType.Line;
                    chart1.ChartTitle.TextBlock.Text = "New Report to Check Children's age";
                    chartDef.Series.Clear();
                    chartDef.Series.Add(_series);

                    foreach (DataRow dtrowNew in ds.Tables[0].Rows)
                    {
                        if (string.IsNullOrEmpty(AverageNameNew) && DateTime.TryParse(interval2, out stepDateNew))
                            handlingPlanNameNew = "New Report to Check Children's age";

                    }
                    _seriesNew.Appearance.LineSeriesAppearance.Color = System.Drawing.Color.Black;
                    _seriesNew.Appearance.LineSeriesAppearance.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
                    _seriesNew.Appearance.LineSeriesAppearance.PenStyle = System.Drawing.Drawing2D.DashStyle.Dash;
                    _seriesNew.Appearance.LineSeriesAppearance.Width = 5;
                    _seriesNew.Name = AverageNameNew;
                    _seriesNew.Type = ChartSeriesType.Line;
                    chart1.ChartTitle.TextBlock.Text = "New Report to Check Children's age";
                    chartDef.Series.Clear();
                    chartDef.Series.Add(_seriesNew);

                }

            }

        }

[Ebenezer]

I have fixed it. Thanks