HttpSession sessao = request.getSession(); sessao.removeAttribute(SessionConstants.INFO_SECTION);  DynaActionForm courseForm = (DynaActionForm) form;
DynaActionForm courseForm = (DynaActionForm) form;
	public ActionForward executionCourseViewerSelectedFromForm(		ActionMapping mapping,		ActionForm form,		HttpServletRequest request,		HttpServletResponse response)		throws Exception {				HttpSession sessao = request.getSession();		sessao.removeAttribute(SessionConstants.INFO_SECTION);					DynaActionForm courseForm = (DynaActionForm) form;			return executionCourseViewerSelectedByInitials(				mapping,				form,				request,				response,				(String) courseForm.get("courseInitials"));			}