How to add duckling entity in stories.md

here is an example . I am interested in time entity. but it seems not working.

Story all

  • appointment{“PERSON”:“vijaya sangkar jaganathan”, “time”: “2019-07-29T00:00:00.000+02:00”}
    • action_save_doctor
    • slot{“with”: “vijaya sangkar jaganathan”}
    • action_save_date
    • slot{“date”: “20-01-2019”}
  • inform{“id”: “1”}
    • action_save_slots
  • inform{“id”: “6”}
    • action_save_num
    • slot{“id”: “6”}
    • utter_ID
  • inform{“id”: “9290942”}
    • action_save_id
  • affirmation
    • action_save_patient
    • action_add_appointment
    • action_restart

Did u set up the duckling server in your configuration file

yes it is working well. but here with this story not working