af-custom-submission-data.php

<?php


add_action( 'af/form/submission', function ( $form, $args ) {

  // Append a custom value to the submission array
	AF()->submission['some_extra_data'] = 'some value here';

}, 10, 2 );


add_filter( 'af/form/success_message', function ( $success_message, $form, $args ) {

  // Use the custom value to determine the success message
	if ( AF()->submission['some_extra_data'] === 'some value here' ) {
		$success_message = 'This is a custom success message';
	}

	return $success_message;

}, 10, 3 );