Map<String, Object> parameters = new HashMap<String, Object>();
        parameters.put("user.address.city", "London");
        parameters.put("user.address['postal']", "QJR387");
        parameters.put("user.name", "Superman");
        Action action = new SimpleAction();
        pi.setParameters(action, stack, parameters);
        assertEquals(true, pi.isOrdered());
        assertEquals(3, actual.size());
        assertEquals("London", actual.get("user.address.city"));