# Help debugging call to gform\_field\_validation **URL:** \ **Category:** Get Help\ **Tags:** gform\_field\_validation\ **Created:** [April 10, 2020, 6:46pm UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425 "2020-04-10T18:46:10Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![user5e85fa28ed0e6034](https://avatars.discourse-cdn.com/v4/letter/u/d6d6ee/32.png) [@user5e85fa28ed0e6034](https://community.gravityforms.com/u/user5e85fa28ed0e6034)\ **Post date:** [April 10, 2020, 6:46pm UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425/1 "2020-04-10T18:46:11Z")
Hi - I’m a long time developer but new to Gravity Forms and Wordpress. I can’t seem to get the filter gform\_field\_validation to fire. The bit of code is in the Functions.php file with the location of “wp-content/themes//resources/functions.php”. To call the function that I created I’m using this: ``` //The following declaration targets field 1 in form 6 add_filter( 'gform_field_validation_6_1', 'your_function_name', 10, 4 ); ``` That I copied from the documentation. Then changing it to use the values in my form (which is just generic code that I’m using to figure out how this works): ``` //Target field 24 in form 4 add_filter( 'gform_field_validation_24_4', 'my_custom_validation', 10, 4 ); function custom_validation( $result, $value, $form, $field ) { if ( $result['is_valid'] && intval( $value ) > 10 ) { $result['is_valid'] = false; $result['message'] = 'Please enter a value less than 10'; } return $result; } ``` Also I can’t seem to figure out what the parameters 10 and 4 (sometimes I see 10 and 7) in the add\_ filter call. In the docs it states that those are the form and field object. I’ve tried it with 10, 4 - 10,7 - 4, 24 - and leaving it out all together. Am I doing any of this correctly? Please help… ---
**Author:** ![chrishajer](https://sea2.discourse-cdn.com/flex020/user_avatar/community.gravityforms.com/chrishajer/32/88_2.png) [@chrishajer](https://community.gravityforms.com/u/chrishajer)\ **Post date:** [April 10, 2020, 7:08pm UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425/2 "2020-04-10T19:08:21Z")
10 is the priority at which the filter runs. 4 is the number of arguments the function accepts. Neither of those need to be to changed. Those are WordPress conventions and not related to Gravity Forms: [https://developer.wordpress.org/reference/functions/add\_filter/](https://developer.wordpress.org/reference/functions/add_filter/) Now, what do you need help validating specifically? Let us know what your validation rules should be, and we’ll see if we can help. Thanks! ---
**Author:** ![user5e85fa28ed0e6034](https://avatars.discourse-cdn.com/v4/letter/u/d6d6ee/32.png) [@user5e85fa28ed0e6034](https://community.gravityforms.com/u/user5e85fa28ed0e6034)\ **Post date:** [April 10, 2020, 8:34pm UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425/3 "2020-04-10T20:34:16Z")
Thank you for the quick reply and the information! I need to validate that the user picks a date from a date picker that’s at least one year in the past from the current date. Here’s my code: add\_filter( ‘gform\_field\_validation\_4\_24’,‘gt\_one\_year’ , 10, 4 ); function gt\_one\_year( $result, $value, $form, $field ) { ``` $userDate = rgpost('input_4_24'); $userYear = $userDate[2]; $currentYear = date('Y'); if ($currentYear == $userYear) { $result['is_valid'] = false; $result['message'] = "Date selected must be at least one year ago from today. Please correct."; } return $result; } ``` ---
**Author:** ![chrishajer](https://sea2.discourse-cdn.com/flex020/user_avatar/community.gravityforms.com/chrishajer/32/88_2.png) [@chrishajer](https://community.gravityforms.com/u/chrishajer)\ **Post date:** [April 11, 2020, 2:04pm UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425/4 "2020-04-11T14:04:19Z")
How about if you only allowed them to pick dates prior to one year ago? You could use this filter for that: > **[gform\_datepicker\_options\_pre\_init - Gravity Forms Documentation](https://docs.gravityforms.com/gform_datepicker_options_pre_init/)** > > This filter can be used to modify the options used to initialize a fields datepicker. If that’s an option, we can help with the validation code. ---
**Author:** ![user5e85fa28ed0e6034](https://avatars.discourse-cdn.com/v4/letter/u/d6d6ee/32.png) [@user5e85fa28ed0e6034](https://community.gravityforms.com/u/user5e85fa28ed0e6034)\ **Post date:** [April 13, 2020, 1:20pm UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425/5 "2020-04-13T13:20:55Z")
That would work great. I think that’s a better solution. Where do I place javascript in the form? Just for my future understanding, do you see anything wrong with my php code? I greatly appreciate your help!! ---
**Author:** ![chrishajer](https://sea2.discourse-cdn.com/flex020/user_avatar/community.gravityforms.com/chrishajer/32/88_2.png) [@chrishajer](https://community.gravityforms.com/u/chrishajer)\ **Post date:** [April 13, 2020, 1:29pm UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425/6 "2020-04-13T13:29:37Z")
To add the script to your form, you can add an HTML field to the form, and add the script there. Be sure you use the opening `` tags. As for your PHP code, I did not test it to know where it might not be working 🙂 ---
**Author:** ![richardw8k](https://sea2.discourse-cdn.com/flex020/user_avatar/community.gravityforms.com/richardw8k/32/2354_2.png) [@richardw8k](https://community.gravityforms.com/u/richardw8k)\ **Post date:** [January 5, 2022, 8:49am UTC](https://community.gravityforms.com/t/help-debugging-call-to-gform-field-validation/4425/7 "2022-01-05T08:49:10Z")