Forms :: Pre-populate Popup Form After Update To Another Form

I have two tables - Interviews & Placements.these tables have multiple foreign keys which pull information from other tables (CandidateID,ClientID etc). I have designed queries and forms (datasheet view) which display all the values that I need, For example:

The interview form shows the following fields:
CandidateName;Company;consultant;1stInterviewDate; 2ndInterviewDate;Offer;Accepted

the placements form shows the following fields:
PlacedCandidate;Company;Consultant;PlacementDate;F ee;

This query "qry_Interviews" populates these forms using the foreign keys:

CandidateID from candidates table
CompanyID from companies table
consultant from consultants table

Ideally what I'd like to happen, is when the "accepted" field is updated on the interviews form, the placements form opens as a pop up and is auto populated with the values (CandidateName;Company & consultant).So far I have tried setting the value directly, i.e on the "on Open" event of the Placements form I entered:

Me.Txtcontactname = Forms!ISISnavigationMain!navigationSubform.Form!DS .Name

This does not work. Should I be populating the placements form with the actual Foreign key values rather than the resolved names? Ideally I'd want the pop up placements form to display the actual names rather than just ID numbers.