Setup R12 AME rules for Internet Expense

Currently we are in R12 and are using workflow for approval routing of Internet Expense. As requirement change, we would like to change to use AME rule. Thus, I have carried out a simple test by setting up the following:

1. Profile Option: AME: InstalledSet to 'Yes' for Payables module2. Create conditionEXPENSE_TYPE in (Stationery)3. Create Action Typespost-chain-of-authority approvalsRequire post-approval from AP_EXP_APPROVAL4. Approver GroupsDynamicselect 'person_id:'||35925 from dual5. Create RulesIf EXPENSE_TYPE in (Stationery) then Require post-approval from MASAP_EXP_APPROVAL

However, during testing, the expense report is approved automatically without routing to the approval according to AME rules

Appreciate any hints on this issue or advise on the steps to setup AME rules for Internet Expense.