I am using module "Base report xlsx" and xlsxwriter to write a report xlsx. But i have a problem about translate data. I alr use _() method and translate it in my language (vi.po -vietnamese) like: 

title_line_format = workbook.add_format({'bold': True, 'font_size': 20, 'align': 'center'})

data = _("Procurement List Report")

sheet.merge_range('A1:N3', data, title_line_format)

But when i export, my file still be written by english . Am i wrong? Can anyone explain why it didin't work?

Thanks and Regards,

Minh