Approval rules for DOR using AOR

We are setting up the Approval rules for Document of Records based on AOR availability

requirement is

• Use HRBP Advisor (AOR) if exists
• If HRBP Advisor is blank, then use HR Mgr_Sr Mgr
• If HR Mgr_Sr Mgr is blank, then route to ROG Groups EDM

we have written below approval rule to check if HRBP Advisor exists

( ( ( Task.payload.getNewDoRByTransactionIdResponse.result.AuthorizationRequired == "Y" ) && ( Task.payload.Requestor's Assignment.result.personId == Task.payload.getNewDoRByTransactionIdResponse.result.personId ) ) && ( GetRepresentative("ROG_ADV",Task.payload.getRepresentativeListResponse.result) != null ) )

but this rule is always executed even when AOR exists or not.

Can someone please let me know if there is anything wrong with the rule .