Binary option not woring with 2 specific data fields from iobroker

  • What Grafana version and what operating system are you using?
    Grafana v10.0.1 (5a30620b85)

  • What are you trying to achieve?
    I want to use transformations - binary operation to calculate may cars kWh usage per 100 kilometers

  • How are you trying to achieve it?

  • What happened?
    when working with the data field km I always get NaN as a result

  • What did you expect to happen?

  • Can you copy/paste the configuration(s) that you are having problems with?

  • Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.
    no error

  • Did you follow any online instructions? If so, what is the URL?