Bug - UTL_SMTP for chinese characters with CLOB

Hi All

When I try to write Chinese characters in a CLOB variable using

UTL_SMTP.write_data (objconnection, dbms_lob.substr(pivcbody, 1, v_offset)); it is printing as Question mark ???? instead of the chinese character 付款说明

The code i have used is

  objconnection := UTL_SMTP.open_connection (pivcmailip, pinport);

  UTL_SMTP.ehlo (objconnection, pivcmailip);

  UTL_SMTP.mail (objconnection, pivcfromemail);

  UTL_SMTP.rcpt (objconnection, pivctoemail);

  UTL_SMTP.open_data (objconnection);

  UTL_SMTP.write_data (objconnection, 'From: ' || '"' || pivcfromname || '" <' || pivcfromemail || '>' || UTL_TCP.crlf );

  UTL_SMTP.write_data (objconnection, 'To: ' || '"' || pivctoname || '" <' || pivctoemail || '>' || UTL_TCP.crlf );