AME for iExpense approval

Hi,

We have this simple requirement for iExpense approval:

if expense type is "X" then send it to approver "A",

else follow the standard oracle hierarchy based approval routine.

The "if" part is easy to develop, but is there any easier way to accomplish the "else" part?

So basically what we are trying to achive is this:

if expense type is "X" follow AME else follow standard hierarchy based approval rule.

Thanks in advance.

Mani.