FoxPro doesn't support named parameters. You've to look up in the Excel VBA reference what positional parameers are or use Intellisense. In this case FindNext(0 method have only one parameter

foundcell = oExcel.Range.FindNext(oExcel.ActiveCell)

>The following code gives me an error "Function name is missing )" on the line where I try to invoke the FindNext function. I suspect it is the VARIANT after: in the clause that needs to be tweaked somehow, but I haven't been able to determine how.
>
>Any suggestions welcome!
>
>

>oExcel.Range("F8").Select
>oExcel.Selection.End(xlDown).Select
>oExcel.SendKeys("{DOWN}")
>foundcell = oExcel.ActiveSheet.Cells.Find("=SUBTOTAL(9,E")
>DO WHILE .t.
> oExcel.Range(foundcell.address).select
>* oExcel.SendKeys("{RIGHT}{RIGHT}")
> oExcel.ActiveCell.OffSet(0,3).FormulaR1C1 = "=RC[-1]/RC[-3]"
>
> foundcell = oExcel.Range.FindNext(after:=oExcel.ActiveCell)
> IF ISNULL(foundcell)
>   EXIT
> ENDIF
>
>ENDDO
>