Using JS to MQTT return value

,
1

I have an item configured:

UID: mqtt:topic:8b07ced21b:fc1c2de3e2
label: Efergy E2
thingTypeUID: mqtt:topic
configuration: {}
bridgeUID: mqtt:broker:8b07ced21b
channels:
  - id: energy_kWh
    channelTypeUID: mqtt:number
    label: Energiankulutus
    description: ""
    configuration:
      stateTopic: rtl_433/602024/energy_kWh
      transformationPattern: JS(divByTwo.js):%f
      unit: kWh

And a js script is in the folder (and transformation enabled):

(function(f){
        return f / 2;
})(input)

But openhab gives me an error:

2021-08-28 00:28:13.509 [WARN ] [t.generic.ChannelStateTransformation] - Transformation service JS(DIVBYTWO.JS) for pattern %f not found!

Can anybody tell me what is wrong with my config?

2

Syntax error

3

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