request.setAttribute("roomId", roomId);
request.setAttribute("roomId", index.toString());
    public ActionForward prepararVerSala(        ActionMapping mapping,        ActionForm form,        HttpServletRequest request,        HttpServletResponse response)        throws Exception    {        super.execute(mapping, form, request, response);        request.removeAttribute(mapping.getAttribute());        DynaActionForm posicaoSalaFormBean = (DynaActionForm) form;        Integer index = (Integer) posicaoSalaFormBean.get("index");        request.setAttribute("selectedRoomIndex", index);        String roomId = request.getParameter("roomId");        request.setAttribute("roomId", roomId);        // Reset indexForm value        DynaActionForm selectRoomIndexForm = (DynaActionForm) form;        selectRoomIndexForm.set("index", null);        return (mapping.findForward("VerSala"));    }