Notify group with platform telegram not working

Configuration
1

Hello. I try to use notify group for sending telegram notify to two person.
configuration.yaml

notify:
  - name: Pavel
    platform: telegram
    chat_id: xxxxxxx
  - name: Nata
    platform: telegram
    chat_id: yyyyyyy
  - name: all
    platform: group
    services:
      - service: Pavel
      - service: Nata

but I have got such error

Invalid config for [notify.group]: invalid slug Pavel (try pavel) for dictionary value @ data['services'][0]['service']. Got 'Pavel'. (See ?, line ?).

I tried to use

  - name: all
    platform: group
    services:
      - service: notify.Pavel
      - service: notify.Nata

the same error . Tell me please, what wrong ?

2

Try this:

notify:
  - name: Pavel
    platform: telegram
    chat_id: xxxxxxx
  - name: Nata
    platform: telegram
    chat_id: yyyyyyy
  - name: all
    platform: group
    services:
      - service: pavel
      - service: nata

The created services are lowercase (notify.pavel).

3

Thank you ! This work !