Hi, My idea is: * If two SESSION scope SFSBs need to interact each other (e.g.pass some values), it is better to use a STATELESS session bean as a bridge to transfer value and action between the two SESSION scope SFSBs (SFSB ->SLSB -> SFSB). This way is better than directly injecting a SESSION scope SFSB into another SESSION scope SFSB. * If two EVENT or CONVERSATION scope SFSBs need to interact each other, it doesn't matter, the two injection ways (SFSB ->SLSB -> SFSB; SFSB -> SFSB) work similarly. Is it correct? It will be appreciated if some experts confirm this. Thank you. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965479#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...