Template issues driving or home

Configuration Frontend
1

I’m trying to get this code to show that I am home at the present.

type: horizontal-stack
cards:
  - type: custom:mushroom-template-card
    primary: >-
      {% if (state_attr('sensor.motorola_edge_2022_detected_activity', '') ==
      'still') %} Mike is here: {% else %} Mike is {% endif %}
    secondary: >-
      {% if (state_attr('sensor.motorola_edge_2022_detected_activity', '') ==
      'still') %} Location: {{
      state_attr('sensor.motorola_edge_2022_geocoded_location', 'Name') }} {{
      state_attr('sensor.motorola_edge_2022_geocoded_location', 'locality') }},
      {{ state_attr('sensor.motorola_edge_2022_geocoded_location', 'city') }},
      {{ state_attr('sensor.motorola_edge_2022_geocoded_location',
      'postal_code') }} {% else %} Driving... {% endif %}
    icon: >
      {% if (state_attr('sensor.motorola_edge_2022_detected_activity', "") ==
      'still') %} mdi:home-account

      {% else %} mdi:home-search

      {% endif %}
    multiline_secondary: true
    color: |
      {% if is_state('device_tracker.mike', 'home') %} green
      {% else %} cyan
      {% endif %}
    features_position: bottom

I entered {% if (state_attr('sensor.motorola_edge_2022_detected_activity', '') == 'still') %} Mike is here: {% else %} Mike is {% endif %}

into the template tool, and it replies states it is listening for a change in that attribute. Yet when still changes to unknown (i walked from the shop to the house), nothing changed.  The logs showed a change. The icon shows Driving, and doesn't change.
What am I doing wrong?
2

You can’t have an attribute with a blank ID… are you sure you don’t mean to use the state i.e.

states('sensor.motorola_edge_2022_detected_activity')

Or you could use is_state to test the value instead of ==…

{% if is_state('sensor.motorola_edge_2022_detected_activity', 'still') %}
4

That works. Thank you