Setting a bool variable in BDM on instantiation in form


After searching and reading all sorts of posts on this topic, I'm still at a total loss ...

I have the requirement of filling some fields in my BDM upon start of a process based on an initial form. With "regular" data fields like text, date or integer I'm fine so far, but for either a select or boolean/checkmark field I have no idea how to convert the actual form input to the value in the the database.

The documentation is pretty "thin" as far as this is concerned ...

No answers yet.