We are migrating our application from richfaces 3 to 4 and realized that the "data" support has been removed from calendarmodelitem . That being said, I am not able to display the events corresponding to each day in a calendar month. is there any way of customizing the "days" shown in calendar? I am fable to customize the style conditionally now using setstyleclass method . But I have to append the events(available in the form of string) to each day. Can you please help?