FormField field = form.addField();
field.setType(FormField.Type.hidden);
field.setVariable("FORM_TYPE");
field.addValue("http://jabber.org/protocol/admin");
field = form.addField();
field.setType(FormField.Type.list_single);
field.setLabel("Maximum number of items to return");
field.setVariable("max_items");
field.addOption("25", "25");
field.addOption("50", "50");