I have already this code

```
Excel::_ApplicationPtr app("Excel.Application");

app->Visible[0] = false;

Excel::_WorkbookPtr book = app->Workbooks->Add();
Excel::_WorksheetPtr sheet = book->Worksheets->Item[1];

RangePtr pRange = sheet->Cells;
RangePtr pCell;

pCell = pRange->Item[1][1]; // A1
pCell->Value2 = "1";
pCell = pRange->Item[1][2]; // B1
pCell->Value2 = "1";
pCell = pRange->Item[1][3]; // C1
pCell->Value2 = "10";

pCell = pRange->Item[2][1]; // A2
pCell->Value2 = "3";
pCell = pRange->Item[2][2]; // B2
Cell->Value2 = "1";
pCell = pRange->Item[2][3]; // C2
pCell->Value2 = "20";

```

and next 

```
Excel::RangePtr pBeginRange = pRange->Item[1][1];
Excel::RangePtr pEndRange = pRange->Item[5][9];
Excel::RangePtr pTotalRange = sheet->Range[(Excel::Range *)pBeginRange][(Excel::Range *)pEndRange];

_ChartPtr  pChart2  = book->Charts->Add();
pChart2->ChartType = xlBubble3DEffect; 

pChart2->SetSourceData((Excel::Range *)pTotalRange, (long)Excel::xlColumns);

```

How to disable automatic creation SeriesCollection in Excel Chart. I want to set the ranges manually. In the automatic creation all SeriesCollection has XValues in the first column. But I needn't it.