Mini-climate-card how to toggle off/heat - mode

Configuration Frontend
1

Hi,

I was looking for a very small and easy climate card and found the mini-climate-card. It looks cool and you can customize it in many ways. I am using it for controlling the temperature in my greenhouse which should not go under 0°C.

Now I am looking for a function to toggle the state between “heat” (standby) and “off” by clicking the “fire” -icon. But there is only a dropdown. How can I change it to toggle?

image

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type: custom:mini-climate
entity: climate.thermostat_gartenhaus
name: Gartenhaus
icon: mdi:greenhouse
toggle:
  default: true
fan_mode:
  hide: true
hvac_mode:
  source:
    "off":
      icon: mdi:power
      name: aus
    heat:
      icon: mdi:fire
      name: heizen
secondary_info:
  type: hvac-action
  source:
    heating: heizen
    idle: standby
    "off": aus
indicators:
  humidity:
    icon: mdi:water
    unit: "%"
    round: 1
    source:
      entity: sensor.gh_ht_in_humidity
  power_consumption:
    icon: mdi:flash
    unit: W
    round: 1
    source:
      entity: sensor.gh_a02_k0_power
buttons:
  preset_mode:
    type: dropdown
    location: main
    state:
      attribute: preset_mode
    source:
      night: Abgesenkt
      day: Heizen
      auto: Automatisch
    icon: mdi:thermometer