Assuming you have some factory for house to expose the current house in EL #{house.rooms.size} should work fine View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4091753#4091753 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4091753