damianharvey, thank you for the example. This radically differs from the model I have had in mind about page parameters. I thought that tag <param name="id" value="#{testBean.id}"/> takes value FROM #{testBean.id} and makes it available via @RequestParam. In your example, value is being taken from row.id using f:param (that is understandable) , and then it is being ASSIGNED TO #{testBean.id}. I thought "param" in pages.xml exposes value to context for further usage, i.e. "value=" attribute is getter, not setter. How can it work in both directions ? At least it works in the way I expected.. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4114964#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...