"set_column" is a WORKSHEET method, not a WORKBOOK method.
Your "$sw_workbook" is a Work BOOK.

             I hope life isn't a big joke, because I don't get it.
                   -SNL

In reply to Re: Can't locate object method "set_column" via package "Spreadsheet::WriteExcel" by NetWallah
in thread Can't locate object method "set_column" via package "Spreadsheet::WriteExcel" by vikram007

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