Return States showing as undefined

Configuration
1

Trying to make new room cards and running into this issue when trying to add temp and humidity to the card my code is as follows


      - type: custom:button-card
        name: Living Room
        icon: mdi:sofa
        entity: sensor.kitchen_temperature_2
        show_state: false
        custom_fields:
          temp: >
            [[[ return states['sensor.bedroom_thermometer_temperature'].stat +'°F' ]]]
          hum: >
            [[[ return states['sensor.living_room_thermometer_humidity'].stat + '%']]]

It shows up on card but as undefined F and undefined %. The sensors are working and outputting data just not onto the card. Any help would be greatly appeciated thank you

2

Uhh, what is the [[[ and ]]] expected to do? That certainly is not a standard Jinja template. Run Python or JavaScript or…?

3

It’s .state, not .stat.

It’s JS. See the custom button card docs.