http response to smsc with xml

[Benjamin Heryanto]

Dear list

How can return http response with following format

<?xml version="1.0" ?>
<MO>
<STATUS>0</STATUS>
<TRANSID>Transaction ID</TRANSID>
<MSG>Message processed successfully</MSG>
</MO>

I already create coding like this below , but still dont get a clue how to
make Transaction ID(fetch from id variable) dynamic change.

  id = http_cgi_variable(cgivars, "transid");
  ...
        ret = bb_smscconn_receive(conn, msg);
        retmsg = octstr_create("<?xml version=\"1.0\"
?><MO><STATUS>0</STATUS><TRANSID>id</TRANSID></MO>");
        status = (ret == 0 ? HTTP_OK : HTTP_FORBIDDEN);
    }

    reply_headers = gwlist_create();
    http_header_add(reply_headers, "Content-Type", "text/xml");
    http_send_reply(client, status, reply_headers, retmsg);


Best Regards