Saving the subjectName of a certificate in XML

IMPORT xml

MAIN
  DEFINE x509 xml.CryptoX509
  DEFINE key xml.CryptoKey
  DEFINE doc xml.DomDocument
  LET x509 = xml.CryptoX509.Create()
  TRY
    CALL x509.loadPEM("RSA1024Certificate.crt");
  CATCH
    DISPLAY "Unable to load certificate :",STATUS
    EXIT PROGRAM
  END TRY
  TRY
    CALL x509.setFeature("X509SubjectName",TRUE)
    LET doc = x509.save()
    CALL doc.setFeature("format-pretty-print",TRUE)
    CALL doc.save("RSAX509SubjectName.xml")
  CATCH
    DISPLAY "Unable to save certificate :",STATUS
  END TRY
END MAIN