Export to CSV via report (NAV2015)

Hi,
My client doesn't have Xmlports in their licence, thus wants to export data in a CSV via Reports.
Can we create a report on the server, ProcessingOnly, that exports data without getting the error that the file is already open?

OnPreDataItem=BEGIN
                               tpath := 'C:\Users\User\Documents\';
                               tFilename := tpath + 'listing-'+ FORMAT(TODAY,0,'<day,2>-<month,2>-<year,2>')+
                                           FORMAT(TIME, 0, '<hour,2><minute,2><second,2>')
                                           +'.' + 'csv';

                               CLEAR(fFileToExport);
                               CLEAR(objFileSystem);
                               CREATE(objFileSystem, TRUE, TRUE);
                               IF NOT objFileSystem.FileExists(tFilename) THEN
                                  fFileToExport.CREATE(tFilename)
                               ELSE BEGIN
                                  fFileToExport.TEXTMODE(TRUE);
                                  fFileToExport.OPEN(tFilename);
                               END;
                               CLEAR(objFileSystem);


                               fFileToExport.TEXTMODE(TRUE);
                               fFileToExport.WRITEMODE(TRUE);


                               fFileToExport.WRITE(';;"Test Column 3"');
                             END;

               OnAfterGetRecord=BEGIN
                                  fFileToExport.WRITEMODE(TRUE);
                                  fFileToExport.TEXTMODE(TRUE);
                                  fFileToExport.WRITE('test 2');
                                END;

               OnPostDataItem=BEGIN
                                CLEAR(fFileToExport);
                                
                              END;
                               }

Thanks in advance for your help