Yes thats why I made two query clauses in the first place…
So what I want is impossible. The date field will always be empty if the user chooses to set the Conditional field to “no date”.
Possible solution:
Then I have to make a function that triggers on post save that will fill the date field with dummy data so its filled?
So something like: (not correct code i know)
onpost save{
if(!get_field('activi_datumperiode')){ set activi_datum = 1}
}