request.setAttribute("datesVisible", "true"); System.out.println("HERE");
    private void choosenLesson(HttpServletRequest request, InfoSummary infoSummary) throws Exception {        if (request.getParameter("forHidden") != null && request.getParameter("forHidden").length() > 0) {            request.setAttribute("forHidden", request.getParameter("forHidden"));        }        if (request.getAttribute("teste") == null && request.getParameter("lesson") != null && request.getParameter("lesson").length() > 0) {            if (!request.getParameter("lesson").equals("0")) {                request.setAttribute("forHidden", "true");                Integer lessonSelected = new Integer(request.getParameter("lesson"));                findNextSummaryDate(request, infoSummary, lessonSelected);            } else {                request.setAttribute("forHidden", "false");                request.setAttribute("datesVisible", "false");            }        }    }