FinApHoldApproval Workflow to route invoice holds

Summary:

We are looking to route invoice holds using the FinApHoldApproval Workflow. Has anyone successfully implemented this workflow? I have checked off the Holds I want to route under "Manage Invoice Holds and Releases," but am looking for insight on the workflow rules.

Content (required):

We want to use the FinApHoldApproval workflow to route certain holds to the cost center approvers. In the FinApInvoiceApproval workflow, the cost center is defined as "Invoice Distribution.Cost Center Segment" but this is not valid within FinApHoldApproval workflow. I get an error message when I use it and try to save the FinApHoldApproval workflow. What application role can be used to route invoice holds to the cost center?