Cutom period summarizer

[emilkola]

First I want to say thanks for a really good app!

a question, would it be possible to att a custom timeframe for a summarizer value.
Today you summarize based on hour, day, month and year. It would have been really nice if the app also can handle a value for which you can choose the timeframe, one way can be that you reset that value using a flowcard like “reset custom summarizer”.
The use case is if you would like to know a the cost for ex a charge session. So based on a trigger for ex “plug connected for a car” or “charging started” then this custom summarizer value will be reseted, and you will be able to see the cost per session instead of only day/hour/month etc
Together with this new value maybe also have a “last session” value :)