SiteView siteView = null;
	public ActionForward enrollStudent(		ActionMapping mapping,		ActionForm form,		HttpServletRequest request,		HttpServletResponse response)		throws FenixActionException {		HttpSession session = request.getSession(false);		IUserView userView =			(IUserView) session.getAttribute(SessionConstants.U_VIEW);		String examIdString = request.getParameter("objectCode");		Integer examId = new Integer(examIdString);		Object[] args = { userView.getUtilizador(), examId };		SiteView siteView = null;		try {			ServiceUtils.executeService(userView, "EnrollStudentInExam", args);		} catch (FenixServiceException e) {			throw new FenixActionException(e);		}		return viewExamsToEnroll(mapping, form, request, response);	}