Change card status text PIR-sensor

Using a PIR motion sensor, which sends only one RF code, I would like to change the status text on the card. Now it shows “Niet gedetecteerd” (not detected) and “Gedetecteerd” (detected) and I cannot change it. The code below works when using it with a Philips Hue sensor but not with the PIR sensor:

 # Change text motion sensor status
sensor:
  - platform: template
       binary_sensor_aanrecht:
        friendly_name: "Aanrecht"
        value_template: >-
          {% if is_state('binary_sensor_aanrecht', 'on') %}
            Beweging
          {% else %}
            Geen beweging
          {% endif %}
        icon_template: >-
          {% if is_state('binary_sensor_aanrecht', 'on') %} 
            mdi:run-fast
          {% else %} 
            mdi:motion-sensor
          {% endif %}

The PIR sensor is connected over MQTT with a Sonoff/Tasmota bridge. This is the relevant code:

# PIR Sensor
binary_sensor aanrecht:
  - platform: mqtt
    name: 'Aanrecht'
    state_topic: 'tele/SonoffRF1/RESULT'
    value_template: '{{value_json.RfReceived.Data}}'
    payload_on: 'B42666'
    payload_off: 'B42666off'
    device_class: Motion

Would be great to read what I am doing wrong!

Any help would be appreciated :wink: