Wrong Filter for Card

[SteLech]

Hello,

First of all I wanted to thank you for the grate work an the idea to plot those data!
not sure if it is wrong, cause I am not familiar with all those YAML and Plotty.
However I found out that this line for the Lovelace Card did not work in my configuration:
xs: [vars.electricity_price.xs.slice(-1)[0],...meta.future_prices.map(({ startsAt }) => new Date(startsAt))]
It is just becuause the tibber.yaml doesnt write future_prices instead it ist just future in the sensor.
Do I miss something here?
Anyway after fixing meta.future.map everything was working (until i figured out that for the Past energy prices I have to use a Sensor which is in my database).