How to Configure Search by Payload inPI 7.3

Hi,

i have a scenario like File to IDOC.We are configuring the Functional Acknw EDI 997.Whenever the channel fails due to some error in Moni it sends the Acknw with "R" status.Now i want to track all those "R" Messages.I heard that there was a new feature in PI 7.3 that we can Configure the Payload by using some Search Criteria.so,could any one Please help me in that ??

How do we configure the search by payload in Configuration & Monitoring home??