I am running the latest version o Nintex Forms on SharePoint 2013 Enterprise and can't get the validation rule on a form to work. It worked first time, but every attempt to test in the preview fails to use the validation. I am using IE11 for testing as that is the target browser for our users.
I have added a rule on a drop down control and told it to look at the values in two drop-down controls and see if they are equal.
the rule as I have written it is:
Control is invalid if: