i found a possible solution but this seems a little ugly to me. i wrote a method public String getRowClasses { } which loops over the Set and generates a comma seperated list with the class names depending on the special property of each object. so: rowClasses="#{budgetOverview.rowClasses} if theres a better solution tell me please. regards, hasc View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4047173#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...