How to sort by date using the first value of a list of dates?

[disanto]

Hi!
I’m having trouble sorting by date.

I have “events” and one of the fields is event “dates” as I am saving one or multiple dates. So far everything is ok.

When using the Repeater Group, I noticed that it does not allow organizing by fields that are lists.

Problem:
Basically, I would need to take the first value in the list and use it to sort the results.

Thank you for any help!

Save dates:

[disanto]

I found an alternative to sort by the first date of a list of dates.

When saving dates, I extract the first value from the list as UNIX and save in a numeric field “First_date”.
I used the Timestamp number to sort.