Sensor value converted to "on" or "off"

Configuration
1

hello I have a sensor that measures how much water is sent to the tank the code is as follows:

- platform: mqtt
  state_topic: "/ESP_1/flusso/Count"
  name: "flusso"
  icon: 'mdi:fan' 
  qos: 0
  unit_of_measurement: "Lt"
  value_template: "{{ value }}"

my requirement is to create a formula that when the pump is withdrawing generally measures “8.0 / 9.0” liters per minute the data displayed is “on” if it takes “off” if it is turned off in order to create the frontend of HA has a warning that the pump is on.
I was working on button cards but when I enter the data on

                state:
                  - value: 'on'
                    color_type: icon
                    color: rgb(181, 142, 49)
                    spin: true

does not allow me to write “> 0” to indicate that it is on
some idea?

2

You need to use the operator

state: 
  - value: 0
    operator: ">"
3

Grazie sempre gentile…

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