VB6 to .NET Conversion Problem - Resolved

I have several vb programs that I use to create excel spreadsheets. I used the upgrade wizard to convert my VB6 files to a .net file. Before conversion, my trouble statement looks like this:

xlApp.Selection.Subtotal GroupBy:=2, Function:=xlSum,
TotalList:=Array(7, 8), _
Replace:=True, PageBreaks:=True,
SummaryBelowData:=True

After conversion it looks like this:

xlApp.Selection.Subtotal(GroupBy:=2,
Function:=Excel.XlConsolidationFunction.xlSum,
TotalList:=New Object(){7, 8},
Replace_Renamed:=True,
PageBreaks:=True, SummaryBelowData:=True)

When I run the new code, I get the following error:

An unhandled exception of type
'System.Runtime.InteropServices.COMException' occurred in
mscorlib.dll

Additional information: Exception from HRESULT: 0x800A03EC.

Can anyone tell me what this message means and what I can do to correct it?

Thanks

Got it fixed! Update program changed "Replace" to "Replace_Renamed"...changed it back and it works fine.
Also, have to Define the TotalList array.