Pasted

<?php
 function em_sample_snippet( $result, $EM_Booking ){
    $bookingname = $EM_Booking->booking_meta['registration']['field_id']; //replace this with the field ID you used in your Events > Forms Editor
    //add your Thrive Apprentice code here passing the $bookingname or other info you need.
     return $result;
}
add_filter('em_booking_save', 'em_sample_snippet', 100, 2);