code: def change_normal_host_check_interval(self, host, check_interval):
          
          host.modified_attributes |= DICT_MODATTR["MODATTR_NORMAL_CHECK_INTERVAL"].value
          old_interval = host.check_interval
          host.check_interval = check_interval
          # If there were no regular checks (interval=0), then schedule
          # a check immediately.
          if old_interval == 0 and host.checks_enabled:
              host.schedule(self.daemon.hosts, self.daemon.services,
                            self.daemon.timeperiods, self.daemon.macromodulations,
                            self.daemon.checkmodulations, self.daemon.checks,
                            force=False, force_time=int(time.time()))
          self.send_an_element(host.get_update_status_brok())
docs: Modify host check interval
          Format of the line that triggers function call::
  
          CHANGE_NORMAL_HOST_CHECK_INTERVAL;<host_name>;<check_interval>
  
          :param host: host to edit
          :type host: alignak.objects.host.Host
          :param check_interval: new value to set
          :type check_interval:
          :return: None