Add two Custom Fields to be included on the SearchWP settings screen

gistfile1.php

<?php
 
function my_searchwp_custom_field_keys( $keys ) {
  $keys[] = 'my_first_meta_key';
  $keys[] = 'my_second_meta_key';

 return $keys;
}
 
add_filter( 'searchwp_custom_field_keys', 'my_searchwp_custom_field_keys', 10, 1 );

Thank you, fixed!