resolved it with the code from https://www.ads-software.com/support/topic/rename-file-after-upload/
Changed rename($additional_data['files'][0]['filepath'], dirname(__DIR__, 2).'/uploads/attestazioni/import.csv');
rename($additional_data['files'][0]['filepath'], dirname($additional_data['files'][0]['filepath']).'/myname.ext');
Would be nice to have this on menus.
