Hi Bfo81, Thank you very much for your detailed explanation. Yes, you exactly answered my question. Thanks a lot. My second question is whether it is possible to improve conversation SFSB functionality in the future to save the code: "someParamCopy = someParam;" in @Begin method. For example, when click <h:commandLink value="Begin" action="#{testBean.begin}"> | <f:param name="someParam" value="1"/> | </h:commandLink>the conversation SFSB will hold the "someParam" param in session bean until call @End end(). The conversation SFSB should look like: @Stateful | @Scope(CONVERSATION) | @Name("testBean") | public class TestBean implements Test { | | @RequestParameter | private String someParam; | | private String someParamCopy; | | @Begin | public String begin() { | //someParamCopy = someParam; save the code | ... | } | | @End | public String end() { | someParam // have the value 1 | } | } But, currently your idea is best to solve my first question. Thank you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965792#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...