How is it possible to send a purchase order to a supplyer in csv format ?

Is it possible by an event to catch the moment when the printing is done ?

I tried with an event on the creation on this table PURCH_INFO_SERVICES_RPT with this code:

set serveroutput on

declare
   LC$PART_NO   PURCHASE_ORDER_LINE_ALL .PART_NO%Type ;

   Cursor C_lig_achat Is
   Select
    p.PART_NO
   From
    PURCHASE_ORDER_LINE_ALL p
                inner join PURCHASE_ORDER_PRINT_REP pp
               on p.order_no = pp.order_no
   Where
    pp.result_key = &NEW:RESULT_KEY
   ;

begin 

CREATE DIRECTORY FICHIERS_OUT AS 'D:\UTL_FILE_DIR\out.csv';

GRANT WRITE ON DIRECTORY FICHIERS_OUT TO PUBLIC;

   Open  C_lig_achat ;
   Fetch C_lig_achat Into LC$PART_NO;
    utl_file.put_line (FICHIERS_OUT,  || ';' LC$PART_NO);
   Close C_lig_achat ;

UTL_FILE.FCLOSE_ALL

end; 

but the response is “ORA-00922: missing or invalid option”.