Hey, Peter, back to this, I tried to use the additional code for multiple object selection, but for some reason I get the following error while trying to submit the form generated by JSF. 'Conversion Error setting value '1,2' for '#{customer.addresses}'. while '1,2' are the IDs of the selected 'addresses' entity objects. Am I missing anything? seems like this error is generated by JSF itself, and not by the converters or the annotations you have written, thanks View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3964656#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...