How to access Owner user's account details in Expense Line DFF when Delegator is creating expenses.

Summary:

There is a custom DFF <****> (Default Value - SQL query with customized logic) at expense line level which display default Expense user account detail with additional customized logic.

Scenario: - When a user (Delegator) creates an Expense Line for another user (Owner of the Expense). The Custom DFF needs to display the Owners Default Expense Account.

Content (please ensure you mask any confidential information):

We could fetch Delegator user account details at DFF level by using FND_GLOBAL.USER_GUID. But not able to access EXM_EXPENSE_REPORTS.PERSON_ID detail at DFF. How to fetch this value. Tried using :VALUE.PERSON_ID, but its throwing errors.