Compare static value to line sum in search criteria?

Greetings,

Anyone done the following before:

Compare a static value to a transaction line sum in search criteria?  Here's what I've got, and am trying to do:

Fields:
Batch ID (custom)
Batch Amount (custom)
Amount (Foreign Currency)

The idea behind this search is to automate an audit of a web services transaction load: both the batch ID and the batch amount values come from the source system and, if the batch load was successful, the Batch Amount should match Amount (Foreign Currency). So I want to compare these in search criteria, and fire off an email alert when they don't match.