Select.getValue() always returns null

I am new to Vaadin and am trying to use a drop down menu to pick a value from a database table. I’m using a JPAContainer to populate the Select field and this is working fine. The problem is when I select a value in the drop down list it calls the valueChange method, but the getValue() method always returns null.

Below is the code used to create the Select field. I have also tried using ComboBox fields.

        Select employeeCombo = new Select("Employee");
    	employeeContainer =	JPAContainerFactory.make(Employee.class, entityManagerFactory.createEntityManager());
    	employeeCombo.setPropertyDataSource(new SingleSelectTranslator(employeeCombo));
    	employeeCombo.addListener(new Select.ValueChangeListener() 
	            public void valueChange(ValueChangeEvent event) 
			System.out.println("test " + event.getProperty().getValue());
			Employee employee = (Employee) event.getProperty().getValue();

Am I doing something wrong or is this a bug? Amy working examples would be really appreciated.

I found a solution to this here: