Need help creating a second-level supervisory approval rule based on the first-level approver's role

I need help creating a second-level supervisory approval rule in Oracle Fusion Expenses.

• The first-level approver is determined based on role.
• If the expense report total exceeds $25,000, it should route to a second level of approval.
• The second-level approver should be the manager of the first-level approver (the person holding that specific role).

I'm facing an issue with setting up the Starting Participant for the second-level rule — could someone help me with the correct expression/configuration?

What I tried

HierarchyBuilder.getManager("supervisory", Task.systemAttributes.owner, -1, "", "")

HierarchyBuilder.getManager("supervisory",Task.Owner Role,-1,"","MC_EXP_Program_132")

HierarchyBuilder.getManager("supervisory",Task.Owner Role Display Name,-1,"","MC_EXP_Program_132")