Dynamic forms, multiple conditions, timestamp field

hi,

I have a similair issue like in this post just a bit different and I don't see the sollution yet.

I have created an change request form with a timestamp:
basically " When approve field is chechek that set timestamp to current data/time and change to read-only".
The approve field is of the checkbox-type.

Where there is a approval field there should also be a rejection field. And of course I like to timestamp that rejection too.
Creating a timestamp for apprval and a seperate timestamp for rejection might be a workaround.
Another wordkaround could be to create a decision multiplchoice field (Approved/Rejected) and create a dynamic rule like "when decision-field isnot empty set timestamp etc etc" .

However for some other reasons I would prefer to use the two checkbox-fields approach.

Does somebody has a suggestion for a workaround on the DynFormRules limitation??

Thanks Jan-Willem