certificate policies

[Benoit Pommerenke]

I try to use the c interface to add the certificate policies and I have try
this:

I tried using following syntax for the same :

   -

   add_ext(x509OutCertificate, NID_certificate_policies, "Policy:
   2.16.840.1.113733.1.7.54 ,CPS:https://www.verisign.com/cps";);
   -

   add_ext(x509OutCertificate, NID_certificate_policies,
   "2.16.840.1.113733.1.7.54,https://www.verisign.com/cps";);

& many more combinations!! but not able to add this extension in
certificate. Any clue what is wrong?

Thanks in advance