- alias: Enregistrer l'index à la date reçue
    action: recorder.import_statistics
    data:
      statistic_id: sensor.index_eau
      unit_of_measurement: L
      has_mean: false
      has_sum: true
      source: recorder
      stats:
        - start: >
            {{ (as_local(as_datetime(trigger.payload_json.date))) | as_datetime
            | as_local | as_timestamp
              | timestamp_custom("%Y-%m-%dT00:00:00%z") }}
          sum: "{{ trigger.payload_json.index | int }}"
          state: "{{ trigger.payload_json.index | int }}"```
it works but I never find a way to prevent HA to recalculate negative values between the last value entered in the LTS and today
Any advice ?
Thanks
Philippe