I've marked this for the PM to review.
Conventionally, there is no way to do this. As the External Process Action can only be triggered for failures/recoveries and the Event Log Monitor does not fail or recover.
Unconventionally, you could configure ipMonitor to log the Event Log match to a log file using the Text Log Action and then use the External Process Monitor to monitor modifications to the file using the following script:
If the file changes, the External Process Monitor fails and then the External Process Action can be triggered by it. Like I said, it's a little unconventional but a solution nonetheless.
Hope this helps.
Chris Foley - SolarWinds - Support Specialist
Support:866.530.8040 || Fax:512.857.0125
network management simplified | solarwinds.com
Somewhat ugly workaround, but it should work