We conditionally want expense approval to go to line Manager or Project manager at a time?

Summary:

How We conditionally want expense approval to go to line Manager or Project manager at a time?

Case1: If its non-project based expense, it goes to line manager for approval. --> not working.

Case2:If its project based expense, it goes to project manager for approval. --> not working.

Both cases not working if I put the Project related restrictions in "ExpenseReportManagerApprovalRule"

If I remove restriction,

a) It's going to line manager and then go to project Manager for Project specific expense. -- Not expected.

b) Its going to line manager for expense approval for non project related expense. -- as expected.