How to setup Backup Failure notifications in Oracle Enterprise Manager

I've asked this questions before, but got no answer, so apologies for a repost.

Does anyone use OEM 'jobs' for doing RMAN backups? If the backup fails, how do you get notified? I was not able to find any kind of documentation on this subject.

Digging through MGMT_JOB tables is not fun.

This is Oracle Standard Edition

Thanks
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We run Oracle 9iR2,10gR1/2 on RH4/RH3
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