How to create event trigger using a numerical comparison

Hi-

I am trying to create Event Triggers on a text field set to the Input Type of Number. I need to determine if the value is equal to or greater than 18 for one trigger and less than 18 for another. I tried value IN with the value set to >=18 for the first and <18 for the second. This does not seem to work. Is there a way I can do a numerical comparison in a Event Trigger like you can in Chronoforms 7?

Thanks!

Well, I just realized I could just list the numerical values instead of using comparison operators because I have a limited range of values it could be (4-21). However, if the range was not limited, how exactly would one do this?