Conditional Validation for Form Builder

[dhruv_1256]

Hello Support Team,

I am using the Simple Membership plugin with the Form Builder addon.

I need to set up conditional validation for one of my custom fields (Teen Email – field name/ID: swpm-30).

Specifically:

If the URL contains a parameter teen_email, then this field should not be required (validation skipped).

If the URL does not contain teen_email, then the field should remain required.

I have tried the following code (based on the swpm_fb_front_end_registration_form_submitted hook), but it did not work:

add_action('swpm_fb_front_end_registration_form_submitted', function(&$sanitized) {
    // If teen_email is present in the URL
    if (isset($_GET['teen_email']) && !empty($_GET['teen_email'])) {
        if (isset($sanitized['swpm-30'])) {
            $sanitized['swpm-30'] = '';
        }
    }
}, 10, 1);

it does not actually bypass the required validation.

Can you please confirm:

1) Which is the correct action/filter hook to use for custom conditional validation in the Form Builder?

2) How can I override the “required” validation for this field only when teen_email exists in the URL?

This is an important requirement for our workflow, and any code snippet or guidance would be very helpful.

Thank you,
Dhruv

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