Error message not appearing

Hi.  I have a message that is supposed to show up if the user enters something other than 1234 in the form field but the message does not show up.

the build is: https://www.jotform.com/build/90576323463257

I am able to replicate the problem. To solve the issue, please create a duplicate field and hide the original one.

Let us know if you still face any issues.