Add / remove ProjectNotifiers using XML-RPC in Continuum 1.0.3

[Banck, Arent-Jan]

Hi,
I am trying to use the XML-RPC API to manage the notifiers for a
project, but am unsuccessful doing so. 
When adding notifiers in the web-ui, and iterating over the
projects/notifiers, list of notifiers length is always zero.
I am using SampleClient.java as basis, code snippet:
            projects = pr.readProjects();
            for ( int i = 0; i < projects.length; i++ )
            {
                System.out.println( projects[i] + " - Name=" +
projects[i].getName() );

                List notifiers = projects[i].getNotifiers();           
                System.out.println(notifiers.size()); // Always zero

When trying to add a notifier by creating a new one and adding it by:
    projects[i].addNotifier(newNotifier);
the notifier doesn't seem to get added.
 
Am I missing something here, what to do to get this working?
 
Thanks,
 
Arent-Jan