owc11画饼图时如何显示比例

[蘑菇]

我用owc11画了个饼图，可是这个饼图不能显示每一部分的百分比和具体的数量。如何能实现啊？？
我的源码如下：
Dim ChartSpace1 As OWC11.ChartSpace
ChartSpace1 = New OWC11.ChartSpaceClass
Dim chart1 As OWC11.ChChart
chart1 = ChartSpace1.Charts.Add(0)
ChartSpace1.HasChartSpaceLegend = True
ChartSpace1.HasChartSpaceTitle = True
ChartSpace1.ChartSpaceTitle.Caption = "数据集访问分析图"
chart1.Type = ChartChartTypeEnum.chChartTypePie3D
chart1.SeriesCollection.Add(0)
chart1.SeriesCollection(0).SetData(OWC11.ChartDimensionsEnum.chDimSeriesNames, OWC11.ChartSpecialDataSourcesEnum.chDataLiteral, "aa")
chart1.SeriesCollection(0).SetData(OWC11.ChartDimensionsEnum.chDimCategories, OWC11.ChartSpecialDataSourcesEnum.chDataLiteral, "a" + Chr(9) + "b" + Chr(9) + "c")
chart1.SeriesCollection(0).SetData(OWC11.ChartDimensionsEnum.chDimValues, OWC11.ChartSpecialDataSourcesEnum.chDataLiteral, "10" + Chr(9) + "20" + Chr(9) + "30")