Multi record form with 'multiple' $_Post field only saves last entry

Hi,

I have a from like the one below, and submitting does work. but only the last three fields of each form row is showing in the db as three new records. while I’m expecting that all 5 column are inserted. so in this case it would mean 15 new records(5 columns X 3 from rows(each containing 3 fields)).

I guess that i’m missing something. Here, but can’t figure out what.

my form:

image.png999×559 17 KB

image.png320×831 30.5 KB

server action(all variables in the record are set as multiple, as this would be a most logical thing to me):

Regards,
Nick