The code is follow,the chart is as the attachment.  How can I set the thickness of the linechart to 10?

  //定义数据源,根据其可方便设置series
        DataTable dt = new DataTable();
        dt.Columns.Add("col1", typeof(int));
        dt.Columns.Add("col2", typeof(int));
        dt.Columns.Add("col3", typeof(int));
        dt.Columns.Add("col4", typeof(string));
        dt.Rows.Add(new object[] { 2, 14, 12, "H1" });
        dt.Rows.Add(new Object[] { 0, 11, 10, "H2" });
        dt.Rows.Add(new Object[] { 1, 9, 11, "H3" });
        dt.Rows.Add(new Object[] { 0, 10, 11, "H4" });
        dt.Rows.Add(new Object[] { 4, 12, 9, "H5" });
        dt.Rows.Add(new Object[] { 1, 11, 10, "H6" });
        dt.Rows.Add(new Object[] { 1, 8, 7, "H7" });
        dt.Rows.Add(new Object[] { 5, 10, 10, "H8" });

        //以下开始介绍生成Composite的完整步骤

        //第一步:设置UltraChart1图表为组合图表Composite
        this.Chart1.ChartType = ChartType.Composite;

        ThreeDEffect tdft = new ThreeDEffect();
        tdft.Enabled = true;

        Chart1.Effects.Effects.Add(tdft);
        StrokeEffect sdft = new StrokeEffect();
        sdft.Enabled = true;
        Chart1.Effects.Effects.Add(sdft);
        //StrokeEffect s1 = new StrokeEffect();
        //s1.StrokeColor = Color.Black;
        ////    s1.StrokeOpacity = 100;
        //s1.StrokeWidth = 1;
        //Chart1.Effects.Effects.Add(s1);
        //第二步:创建一个图表区域ChartArea,并在UltraChart1图表组合中增加一个图表区域
        ChartArea area = new ChartArea();
        this.Chart1.CompositeChart.ChartAreas.Add(area);

        //第三步：创建X轴,X2轴和Y轴,并添加到图表区域
        //创建X轴,Composite的ColumnChart需要
        AxisItem xAxisColumn = new AxisItem();
        xAxisColumn.OrientationType = AxisNumber.X_Axis;
        xAxisColumn.DataType = AxisDataType.String;
        xAxisColumn.SetLabelAxisType = Infragistics.UltraChart.Core.Layers.SetLabelAxisType.GroupBySeries;
        xAxisColumn.Labels.ItemFormat = AxisItemLabelFormat.ItemLabel;
        xAxisColumn.Extent = 20;
        //创建Y轴,Composite的ColumnChart和LineChart都需要
        AxisItem yAxis = new AxisItem();
        yAxis.OrientationType = AxisNumber.Y_Axis;
        yAxis.DataType = AxisDataType.Numeric;
        yAxis.Labels.ItemFormat = AxisItemLabelFormat.DataValue;
        yAxis.RangeType = AxisRangeType.Custom;
        yAxis.RangeMin = 0;
        yAxis.RangeMax = 20;
        yAxis.Extent = 2;
        //创建X2轴, Composite的LineChart需要

        AxisItem xAxisLine = new AxisItem();
        xAxisLine.OrientationType = AxisNumber.X2_Axis;
        xAxisLine.DataType = AxisDataType.String;
        xAxisLine.SetLabelAxisType = Infragistics.UltraChart.Core.Layers.SetLabelAxisType.ContinuousData;
        xAxisLine.Labels.ItemFormat = AxisItemLabelFormat.ItemLabel;
        xAxisLine.Extent = 20;
        xAxisLine.Visible = false;
        //添加轴线到绘图区域
        area.Axes.Add(xAxisColumn);
        area.Axes.Add(xAxisLine);
        area.Axes.Add(yAxis);

        //第四步：创建若干曲线连续点实例，设置其取值
        //生成ColumnChart所需的一个series
        NumericSeries seriesColumn = new NumericSeries();
        //数据标签值
        seriesColumn.Label = "A";
        seriesColumn.Data.DataSource = dt;
        //轴线上显示的标签信息
        seriesColumn.Data.LabelColumn = "col4";
        //图表上要显示的值
        seriesColumn.Data.ValueColumn = "col2";
        seriesColumn.DataBind();
        //生成ColumnChart所需的一个series
        NumericSeries seriesColumn2 = new NumericSeries();
        //数据标签值
        seriesColumn2.Label = "B";
        seriesColumn2.Data.DataSource = dt;
        //轴线上显示的标签信息
        seriesColumn2.Data.LabelColumn = "col4";
        //图表上要显示的值
        seriesColumn2.Data.ValueColumn = "col3";
        seriesColumn2.DataBind();
        //生成LineChart所需的一个series
        NumericSeries seriesLine = new NumericSeries();
        for (int i = 0; i < 16; i++)
        {
            seriesLine.Points.Add(new NumericDataPoint(5, "12345", false));
            PaintElement pe = new PaintElement();
            pe.Fill = Color.Black;
            pe.Stroke = Color.Black;
            pe.StrokeWidth = 10;
        
         
            seriesLine.PEs.Add(pe);
        }
        this.Chart1.Series.Add(seriesLine);
        this.Chart1.Series.Add(seriesColumn);
        this.Chart1.Series.Add(seriesColumn2);

        //第五步：创建图表样式(外观),并添加到图层集中
        //ColumnChart的图表样式
        ChartLayerAppearance ColumnLayer = new ChartLayerAppearance();
        ColumnLayer.AxisX = xAxisColumn;
        ColumnLayer.AxisY = yAxis;
        ColumnLayer.ChartArea = area;
        //设置图表类型,ColumnChart条形图
        ColumnLayer.ChartType = ChartType.ColumnChart;

        ColumnLayer.Series.Add(seriesColumn);
        ColumnLayer.Series.Add(seriesColumn2);
        //LineChart的图表样式
        ChartLayerAppearance LineLayer = new ChartLayerAppearance();
        LineLayer.AxisX = xAxisLine;
        LineLayer.AxisY = yAxis;
        LineLayer.ChartArea = area;
        //设置图表类型,LineChart条形图
        LineLayer.ChartType = ChartType.LineChart;
        LineChartAppearance my = new LineChartAppearance();
        my.DrawStyle = LineDrawStyle.Solid;
        my.HighLightLines = true;
        my.MidPointAnchors = true;
        my.StartStyle = LineCapStyle.Triangle;
        my.Thickness = 10;
        LineLayer.ChartTypeAppearance = my;
        LineLayer.Series.Add(seriesLine);
        this.Chart1.CompositeChart.ChartLayers.Add(ColumnLayer);
        this.Chart1.CompositeChart.ChartLayers.Add(LineLayer);