How to watch file content tests for several events in the same cycle?

Hello all,

the following lines alert me if the logfiles contains 2 Criticals in 2 
minutes and ignores single Crits:

> check file log_to_watch with path /var/log/log_to_watch
>   if match "CRITICAL" for 2 times within 2 cycles then alert

However, my Crits mostly happen in the same second. I can safely ignore 
a single one, but want monit to alert me if several happen at once (or 
in short succession). The above lines does not do that.

Unfortunately I can't figure out how to proceed. Is there a way?

Any suggestion would be highly appreciated.

Marcus