How to use the Portal proxy service

Hi,

after a upgrade to 7.31 SP14 I cannot use the "Overwrite JVM Settings"=true any more.

So using System.getProperty() is not an option :
System.setProperty("http.proxyHost","myProxyServer.com");
System.setProperty("http.proxyPort","80");

I have added the proxy user and password in the com.sap.portal.ivs.httpservice|proxy .
How can I access this proxy user when calling a URL in the Java code?

Currently is my code :

          Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("myProxyServer.com", 80));

          URLConnection urlConnection = rssUrl.openConnection(proxy);

          //urlConnection.setRequestProperty("Authorization", "Basic " + new String(authEncBytes) );

          final PasswordAuthentication auth = new PasswordAuthentication(userid ,password.toCharArray());

          Authenticator authenticator = new Authenticator() {

              public PasswordAuthentication getPasswordAuthentication() {

                  return (auth);

              }

          };

         Authenticator.setDefault(authenticator);

         inputStreamRSS = urlConnection.getInputStream();

Any ideas ?

Thanks,

Kai