[otrs] Notification to customer on move event

Hi, This should be really simple, but I can't figure out what I'm doing wrong. I want to send a notification to the customer when her ticket is moved to a specific queue. 1. I have created a new event in "Admin -> Notifications (Event)". 2. In "Events" I have selected "TicketQueueUpdate". 3. In "Ticket Filter" I have selected the queue, that the ticket will be moved into. 4. In "Recipient" I have selected "Customer". 5. Finally, in "Notification" I have just entered "test" in both subject and text. When I move the ticket into the queue selected in (3) above, nothing happens. Do I need to enable something? We're on OTRS 3.3.7 -- Lars