Contact Form and Conditional data-field not working

Good evening
I’m contacting you because I have some problems in setting conditional data-field and contact-form plugin.
In particular on the field “data-field”, for example:
I have to create a form that based on the selected data it has to change the result. If I set on conditional field the sentence “If date greater than or equal to 26/04/2023” the result is correct but if I change the parameters the result is always the same.
How can I solve this problem?

Best regards
Giovanni