Custom Card template not working

Configuration Frontend
1

Hi,

I’m using a custom card but the following template is not working

        entity_picture: >
          [[[
            if (states['sensor.netatmo_rain'] <= 0)
              return `/local/icons/weather_icons/animated/day.svg`
            else
              return `/local/icons/weather_icons/animated/rainy-6.svg`
          ]]]

although the value of the sensor is 0 it shows always the “else” picture