Already I have template with chart, I am reading the template and trying to update the data for both the series in chart, when I saved it, it asked me to repair. Chart is combination of Bar char and bubble chart. find the attached chart for your reference.
IChart chart1 = slide.Shapes[0] as IChart;
chart1.ChartData[2, 1].Value = 22;
chart1.ChartData[4, 1].Value = 55;
chart1.ChartData[6, 1].Value = 100;
chart1.ChartData[3, 2].Value = 42;
chart1.ChartData[0, 2].Value = "UiPath1";
chart1.Series[0].Values = chart1.ChartData["B2", "B8"];
//chart1.Series[1].Values = chart1.ChartData["C2", "C8"];
chart1.Series[1].YValues = chart1.ChartData["C2", "C8"];