Gravity Forms sample user meta

gistfile1.php

<?php
/**
 * Save the confirmation number of the wire transfer to the user's meta
 */
add_action("gform_after_submission_12", "save_wire_transfer", 10, 2);
function save_wire_transfer($entry, $form){
    $current_user = wp_get_current_user();
    $user_id = $current_user->id;

    //getting post
    $post = get_post($entry["post_id"]);

    $content = $entry[2.1];



    //changing post content
    if( isset($entry[2.1]) ) {
      update_user_meta( $user_id , 'wire_transfer' , $content , false );
    }
}
?>