Coding question

Configuration
1

Hello,
I am new to coding and have a question that I am hoping someone can help with.
I have some code that will take a url from a scanned nfc tagand play it to a media player:

      - service: media_player.play_media
        data:
          media_content_type: music
          media_content_id: "{{trigger.event.data.url}}"
          enqueue: replace

trigger.event.data.url contains the url of the stream I want to play
this coe works great for any url palced in trigger.event.data.url.
however, I also have scraping sensors mhat will return the latest url for a podcast in the form:
{{states.pocast_sensor_name.state}}
however, if I put “states.pocast_sensor_name.state” in trigger.event.dat.url it does not play the podcast. {{states.pocast_sensor_name.state}} in trigger.event.data.url also does not work.
How do I code this to play the podcast sensor?

.

2

If the state value of sensor.your_podcast contains a URL then this will assign the URL to the media_content_id option.

      - service: media_player.play_media
        data:
          media_content_type: music
          media_content_id: "{{ states('sensor.your_podcast') }}"
          enqueue: replace

Out of curiosity, you haven’t specified an entity_id in the service call so where does it play by default?