Heiman siren in z2m doesn't make a sound

Configuration Zigbee
1

I’m trying to use the Heiman siren in Alarmo. My friendly name of the siren is “Heiman sirene”. Problem is I can’t get it to sound, only by going into zigbee2mqtt/expose tab and hit apply button the siren sounds. I’m trying this script to turn it on:

alias: Heiman Siren Turn On
sequence:
  - service: mqtt.publish
    data:
      topic: zigbee2mqtt/Heiman sirene/set
      payload: {"warning": {"duration": 10, "mode": "emergency", "strobe": false}}
mode: single
icon: mdi:alarm-light

Obviously nothing happens when I run this script and the logs says:

Zigbee2MQTT:info  2024-04-15 20:22:24: MQTT publish: topic 'zigbee2mqtt/Heiman sirene ', payload '{"battery":100,"linkquality":48,"voltage":4100}'
Zigbee2MQTT:error 2024-04-15 20:25:09: Entity 'Heiman sirene' is unknown

So is there some sort of configuration I haven’t done as long as the logs claim that “Entity ‘Heiman sirene’ is unknown”?