How to set brightness in slider button card to an predefined value when switched on

[FFoXXaNN55]

Goodday to you

Is there any idea how the set the brightness in a slider button card to a predifined value when switching the light on?

This is what i did; but my wife wants the lamp at 12% brightness when switching it on.

Anyone an idea how to?

• type: horizontal-stack
  cards:
  • type: custom:slider-button-card
    entity: light.hue_bloom_1
    name: Hue bloom color
    color: dodgerblue
    brightness: 12%
    show_percentage: true
    slider:
    direction: left-right
    background: gradient
    use_state_color: true
    use_percentage_bg_opacity: true
    icon:
    use_state_color: true
    tap_action:
    action: more-info
    brightness_pct: 10%
    action_button:
    mode: toggle
  • type: glance
    show_name: true
    show_icon: false
    entities:
    • entity: sensor.hue_bloom_1_energy
      name: verbruik
    • entity: sensor.hue_bloom_1_power
      name: power
• type: horizontal-stack