Title: Null validation check
Last modified: January 12, 2019

---

# Null validation check

 *  Resolved [paragp](https://wordpress.org/support/users/paragp/)
 * (@paragp)
 * [7 years, 4 months ago](https://wordpress.org/support/topic/null-validation-check/)
 * Hi there,
 * Is there a way to put a validation on 3rd field that the first 2 mandatory fields
   need to be populated (not null or blank) before the 3rd field can be shown? I
   tried but gives me an impression that NULL based validation is not working.
 * Please so let me know. Thanks.
 * regards,
    parag

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Jules Colle](https://wordpress.org/support/users/jules-colle/)
 * (@jules-colle)
 * [7 years, 4 months ago](https://wordpress.org/support/topic/null-validation-check/#post-11086421)
 * You should be able to show field-3-group if field-1 and field-2 are blank by 
   leaving the value empty.
 * So the condition would go something like this:
 *     ```
       show field-3-group if field-1 not equals ""
                      and if field-2 not equals ""
       ```
   
 * (don’t put quotation marks in there, just leave the value blank)
 *  Thread Starter [paragp](https://wordpress.org/support/users/paragp/)
 * (@paragp)
 * [7 years, 4 months ago](https://wordpress.org/support/topic/null-validation-check/#post-11099442)
 * Thanks so much Jules. Really appreciate your help.
    regards, parag
 *  Plugin Author [Jules Colle](https://wordpress.org/support/users/jules-colle/)
 * (@jules-colle)
 * [7 years, 4 months ago](https://wordpress.org/support/topic/null-validation-check/#post-11101742)
 * you’re welcome! feel free to leave a review 😉

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Null validation check’ is closed to new replies.

 * ![](https://ps.w.org/cf7-conditional-fields/assets/icon-256x256.png?rev=2072595)
 * [Conditional Fields for Contact Form 7](https://wordpress.org/plugins/cf7-conditional-fields/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/cf7-conditional-fields/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/cf7-conditional-fields/)
 * [Active Topics](https://wordpress.org/support/plugin/cf7-conditional-fields/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/cf7-conditional-fields/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/cf7-conditional-fields/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [Jules Colle](https://wordpress.org/support/users/jules-colle/)
 * Last activity: [7 years, 4 months ago](https://wordpress.org/support/topic/null-validation-check/#post-11101742)
 * Status: resolved