Virtual EVCS - possible to show charged kWh

i have integrated my BMW & Keba EVCS through the virtual charging node

Is it possible to show kWh of actual session?

I have the value in MQTT, but don´t know how it has to be given to the virtual node?

i tried things like

  "/Ac/Energy/Forward": energyKwh,
    "/Ac/Energy/Reverse": 0,

    "/Ac/L1/Energy/Forward": energyKwh,
    "/Ac/L1/Energy/Reverse": 0,

    "/ErrorCode": evcc.connected === true ? 0 : 1
};