Creating Alerts on Error Log Size

Hi

I'm trying to figure out how to create an alert (not a warning) when my SQL Error Log exceeds a certain size.  I do see alert configuration where I can change the severity of the message to trigger an alert or warning and I see where I can change the size of the error log threshold to trigger the warning that my log is too large to view.  However, I'm hoping I can make that warning into a critical alert to make this type of event more visible to my team.

 

Does anyone know how to do this?

 

Thanks

 

Paul