I am having the exact same issue...
I have a table that has 3 fields, 2 of which are FK's to other tables and those to FK's as a pair must be unique, so they are both set to primary key...which works great in all other parts of the site.
However, I am trying to now set up and update screen for the 3rd field, and I can't figure out how to pass both primary keys as variables to the update page.
Is there a way to force DA to use 2 fields as primary key? If not, what code do I enter/modify on the update page (which is all I really need) to pull the correct result?
Example:
People = FK to People Table - PK
Profession = FK to Profession Table - PK
Salary = requires update fields
A single person may have multiple professions, and each profession has a different salary range associated with it - by the same token, multiple people could have the same professions, and have different salary range(s) than other folks in that profession...
When someone clicks the link on the Person Detail page (which will point to the update salary page for that profession) I need to make sure it pulls the correct person and the correct profession so they can edit the appropriate salary line...
I don't really have any code to attach, because I can't figure out how to complete the DA Wizard with 2 primary keys...
Help?