String jNameTimeZone, String subject, String message) throws Exception{
log.debug("sendInvitationIcalCancelMail");
// Defining Organizer
Users user = Usermanagement.getInstance().getUserById(organizer_userId);
OmTimeZone omTimeZone = OmTimeZoneDaoImpl.getInstance().getOmTimeZone(jNameTimeZone);
IcalHandler handler = new IcalHandler(IcalHandler.ICAL_METHOD_CANCEL);
// refresh appointment
point = AppointmentLogic.getInstance().getAppointMentById(point.getAppointmentId());
// Transforming Meeting Members
HashMap<String, String> attendeeInDerHashMap = handler.getAttendeeData(email, userName, invitor);
Vector<HashMap<String, String>> atts = new Vector<HashMap<String,String>>();
atts.add(attendeeInDerHashMap);
HashMap<String, String> attendeeList = handler.getAttendeeData(user.getAdresses().getEmail(), user.getLogin(), invitor);
GregorianCalendar start = new GregorianCalendar();
start.setTime(startdate);
GregorianCalendar end = new GregorianCalendar();