Geospatial Administrator existing dgn file

Hello,
I have got a problem, and I haven't found any tools in Bentley Map system for this problem.
The problem:
I want to insert an existing dgn file into an XFM project.
Dgn file is connected to a database (MS Access). I would like to connect one of the fields of the database with a feature of the XFM project, like PBA value:
For example:
connect Lot Feature with LotID of database like PBA value.
I defined the Lot Feature in the Geospatial Administrator according to next figure.
Thank you for your help.

Ica