Mail is sending Unicode date instead of readable dates

Problem solved. In the options field there have to be the same values as in the values field...

i all,
urgent issue, as it is about a firefighter site: https://regio-feuerwehr-taeuffelen.ch/ausbildung/entschuldigung

The form I created lists the events from JEvent. That's fine so far and it works flawlessly. But when sending the Mail, we get the Unicode dates instead of the readable ones:
1675441800
1675708200
1678213800

What can I do..?

Would there be an option to override the data so that the actual {var:dtstart} which picks the info from JEvents converts this into readable date?

Thanks so much!
Martin

Chronoforms will not change the date, maybe this is how it’s stored in the database, you need to format it first with php