Securing purchase order-, purchase requisition- and supplier invoice details by project

Since the project commitment and project cost subject areas do not provide all required purchase order/requisition and supplier invoice details, project managers of our organization require OTBI reporting access to purchase orders, purchase requisitions and supplier invoice subject areas, secured by their own projects.

 We’re able to add OTBI duty roles to the role Project Manager and add data security policies that restrict access to Purchase order headers BU wide.

The Security console allows creating new conditions  for an existing or new data resource (Nav: Admin ->  Manage Database Resources, Edit database resource, TAB Condition)

Has anyone been able to create a custom condition that selects PO headers with PO lines that are secured by own project?