thanks

[light lotus]

Thanks, they didn't make sense to me, was looking for a simple counter example, I figure it out I think...

template:

• trigger:
  • platform: state
    entity_id:
    • binary_sensor.internet
      sensor:
  • name: outages
    state: >
    {% if is_state('sensor.outages','Unknown') %}
    0
    {% else %}
    {{ states('sensor.outages')|int + 1 }}
    {% endif %}

[tiny mist]

Make sure to limit your trigger by assigning to and/or from values.

because the state won't update from "unknown" until it is triggered, you can cut out the whole if/then and just use:
state: "{{ this.state|int(0) + 1}}"