code: def change_host_check_command(self, host, check_command):
          
          host.modified_attributes |= DICT_MODATTR["MODATTR_CHECK_COMMAND"].value
          data = {"commands": self.commands, "call": check_command, "poller_tag": host.poller_tag}
          host.change_check_command(data)
          self.send_an_element(host.get_update_status_brok())
docs: Modify host check command
          Format of the line that triggers function call::
  
          CHANGE_HOST_CHECK_COMMAND;<host_name>;<check_command>
  
          :param host: host to modify check command
          :type host: alignak.objects.host.Host
          :param check_command: command line
          :type check_command:
          :return: None