I believe the problem here is that you have not specified a value attribute in the h:selectOneListbox tag, which is how you bind the selected value to your backing bean. If you were to add a video property to your manager bean with a public setter method, you could then do the following: | <h:selectOneListbox size="10" value="#{manager.video}"> | <s:selectItems value="#{videos}" var="video" label="#{video.name}" /> | <s:convertEntity /> | </h:selectOneListbox> | | <h:commandButton type="submit" action="#{manager.editVideo()}" value="Change"></h:commandButton> | Also, make sure that the listbox and commandButton components are wrapped inside of an <h:form> tag or the values will not be posted to the server upon submission. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4119172#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...