Hi, for update an existing file you can refer to report 29 "Export Acc. Sched. to Excel", when running "Update Workbook" option.
Regarding the equation, you need to enter it in Formula field of Excel Buffer table, using a numeric number format (r.g. "'#,##0.00"): since it contains some SUM and IF statements, are you using Excel in English to make it properly been parsed?
