Getting Java Service Wrapper to listen to logfile

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Hi,
The JSW can be configured to listened to console output and restart if a particular string is outputted to the console.

For example:

wrapper.filter.trigger.1=Restart me now.
wrapper.filter.action.1=RESTART

However, I am wondeing if I could configure the JSW to listen for this string from a particular logfile rather than the console?

Thanks.