Tiles and ActionMessage

[Daniel]

Someone know if there are some problem with tiles and messages(errors) I'm using at 
Action file (just code parts ) :

  ActionMessages messages = new ActionMessages();


  ActionMessage message = new ActionMessage(e.getMessage()); //at the catch
  messages.add(ActionMessages.GLOBAL_MESSAGE,message);//at the catch

//out of try catch

  if (!messages.isEmpty()) { 

 saveMessages(request,messages); 

 return (mapping.findForward(mapping.getInput()));
  }

   else {

    return mapping.findForward("sucesso");

 }


and ate the jsp file :

<html:messages id="msg" message="true">

<bean:write name="msg" />

</html:messages>


but the error message don't show, I made one test without tiles and work ok with the 
same 
code, what should be ?????


thanks
Daniel S.