adjust mycred transfer

/**
 * Adjust Transfers
 * Will change the points to be charged for the transfer
 * to the custom point type "my_custom_type" and deposit
 * the same amount into the senders account in the original
 * point type.
 * @version 1.0
 */
add_filter( 'mycred_run_this', 'mycred_pro_payout_on_transfer', 10, 2 );
function mycred_pro_payout_on_transfer( $request, $mycred ) {

    extract( $request );

    if ( $ref != 'transfer' || ( $ref == 'transfer' && $amount > 0 ) ) return $request;

    $request['type'] = 'my_custom_type';

    $mycred->update_balance( $user_id, $amount, $type );
    $mycred->add_to_log(
        $ref,
        $user_id,
        abs( $amount ),
        $entry,
        $ref_id,
        $data,
        $type
    );

    return $request;

}