Not creating snapshots for media_players

Configuration
1

I have this code:

alias: Send Announcment to speakers
icon: "mdi:party-popper"
description: 'Play announcment on speakers'
mode: parallel
sequence:
  - service: scene.create
    data:
      scene_id: before
      snapshot_entities: >
        {% if is_state("input_select.speaker", "Everywhere") %}
          media_player.hallway_ceiling_speaker, media_player.bathroom_ceiling_speaker, media_player.bedroom_ceiling_speaker, media_player.office_shelf_speakers
        {% elif is_state("input_select.speaker", "Hallway") %}
          media_player.hallway_ceiling_speaker
        {% elif is_state("input_select.speaker", "Bathroom") %}
          media_player.bathroom_ceiling_speaker
        {% elif is_state("input_select.speaker", "Bedroom") %}
          media_player.bedroom_ceiling_speaker
        {% elif is_state("input_select.speaker", "Office") %}
          media_player.office_shelf_speakers
        {%else%} 
          #DoNothing  
        {% endif %}
  - service: script.turn_on
    entity_id: script.set_speaker
    data:
      variables:
        speaker: >
          {% if is_state("input_select.speaker", "Everywhere") %}
            media_player.hallway_ceiling_speaker, media_player.bathroom_ceiling_speaker, media_player.bedroom_ceiling_speaker, media_player.office_shelf_speakers
          {% elif is_state("input_select.speaker", "Hallway") %}
            media_player.hallway_ceiling_speaker
          {% elif is_state("input_select.speaker", "Bathroom") %}
            media_player.bathroom_ceiling_speaker
          {% elif is_state("input_select.speaker", "Bedroom") %}
            media_player.bedroom_ceiling_speaker
          {% elif is_state("input_select.speaker", "Office") %}
            media_player.office_shelf_speakers
          {% endif %}
        volume: 0.5
          # "{{states('input_number.announce_volume')|float/100}}"
        source: "Primary Chromecast"
  - delay: "00:00:03"
  - service: tts.google_translate_say
    entity_id: media_player.system_chromecast
    data:
      message: >
       {{states('input_text.announcement_text')}}
      cache: true

  - wait_for_trigger:
    - platform: state
      entity_id: media_player.system_chromecast
      from: 'playing'
      to: 'idle'
    timeout: 10
    continue_on_timeout: true
  - service: scene.turn_on
    data: 
      entity_id: scene.before

and when I select “Everywhere” option it does’nt make any snapshots. Why?

Also,

        volume: > #0.5
           "{{states('input_number.announce_volume')|float/100}}"

also doesn’t work, but it works when I fix the value to 0.5. why?

2

snapshot_entities should be a list. I don’t think it’s possible to return a list from a template, but I may be wrong. Try searching this forum.

I guess this could be because of the extra double quotes. Try this:

        volume: >
           {{states('input_number.announce_volume')|float/100}}