Error when passing variables

@Hs82H wrote:

I try to pass a variable to a script. I want my Google Home lower it’s volume when my son is sleeping, based on a input_select. Unfortunately I get an error and I am not that experienced with variables. I think I messed up some examples I found on the forum.

I got this automation and script:

alias: change volume when son is sleeping
trigger:
  platform: state
  entity_id: 
    - input_select.niek_status
action:
  service_template: >-
    {%
      if (
        is_state('input_select.niek_status', 'sleeping')
      )
    %}
      service: script.set_volume_googlehome
      data_template:
        variables:
          volume: '{{ 30 }}'
    {%
      elif (
        is_state('input_select.niek_status', 'awake')
      )
    %}
      service: script.set_volume_googlehome
      data_template:
        variables:
          volume: '{{ 70 }}'
    {%- endif %}

set_volume_googlehome:
  alias: 'Set volume Google Home'
  sequence:
    - service: media_player.volume_set
      data_template:
        entity_id: media_player.home
        volume_level: '{{ volume }}'

The error I get:

2020-03-06 15:32:44 ERROR (MainThread) [homeassistant.components.automation] Error while executing automation automation.change_volume_when_son_is_sleeping. Invalid data for call_service at pos 1: Service service: script.set_volume_googlehome
  data_template:
    variables:
      volume: 70 does not match format <domain>.<name>

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