def enable_svc_event_handler(self, service):
        """Enable event handlers for a service
        Format of the line that triggers function call::

        ENABLE_SVC_EVENT_HANDLER;<host_name>;<service_description>

        :param service: service to edit
        :type service: alignak.objects.service.Service
        :return: None
        """
        if not service.event_handler_enabled:
            service.modified_attributes |= \
                DICT_MODATTR["MODATTR_EVENT_HANDLER_ENABLED"].value
            service.event_handler_enabled = True
            self.send_an_element(service.get_update_status_brok())