Set default volume

[DanBau86]

Hi,
pretty ned to all this.

so far i got it working and everything is awesome.

I would like to set the default volume before the music start to 30% how do i do that in the code?

This is how it looks for now:

type: custom:mini-media-player
entity: media_player.hjemmegruppe
volume_stateless: false
artwork: cover
info: scroll
volume_level: 30%
shortcuts:
column: 3
buttons:
- name: Top 50
type: service
id: spotcast.start
data:
device_name: Hjemmegruppe
uri: spotify:playlist:37i9dQZEVXbL3J0k32lWnN
random_song: true
shuffle: true
- name: Harry Mack
type: service
id: spotcast.start
data:
device_name: Hjemmegruppe
uri: spotify:artist:3XOZM0DtztbmC1IE3amUnn
random_song: false
shuffle: false
- name: 90'er hits
type: service
id: spotcast.start
data:
device_name: Hjemmegruppe
uri: spotify:playlist:37i9dQZF1DX4AZopZilf0T
random_song: true
shuffle: true
- name: Favoritter
type: service
id: spotcast.start
data:
device_name: Hjemmegruppe
uri: spotify:user:1110769718:collection
random_song: true
shuffle: true
sound_mode: full
group: false