Regex query - todays date?

I’m trying to monitor log files in a directory on a server when specific text appears. I’ve used the ‘Text LogFiles’ rule before baked into the agent and then forwarded these to event console.
However because these files are named with todays date each day I don’t know how to do this, with the current rule.
It would be good if there was an option to select the date modified on the file or something etc…