如何在JSF中显示服务器生成的消息?

I'm currently workin' on a simulation environment build with spring (webflow) and jsf (and primefaces). Within my environment messages are generated when some events are triggered by the server (for instance the "cash Position" of a player has changed). I want this messages to be displayed in my webapplication every time they are triggered. I'm currently workin' on a simulation environme