wc vendors woocommerce bookings commission fee per person

functions.php

add_filter( 'wcv_commission_rate', 'my_wcv_commission_rate', 10, 4 );
function my_wcv_commission_rate( $commission, $product_id, $product_price, $order ) {
	
	$product = wc_get_product($product_id);
	$commission_amount 	= get_post_meta( $product_id, 'wcv_commission_amount', true );
	$items = $order->get_items();
	foreach( $items as $item ) {
		$booking_ids = WC_Booking_Data_Store::get_booking_ids_from_order_item_id( $item->get_id() );
		foreach( $booking_ids as $booking_id ) {
			$booking = new WC_Booking($booking_id);
			if ( $product_id === $booking->get_product()->get_id() ){
				$person_count = array_sum( $booking->get_person_counts() );
				$commission  = $commission_amount * $person_count;
				$commission  = round( $commission, 2 ); //round and remove per item fee.
			}
		}
    }	
	
	if ( $commission < 0 ) 
		$commission = 0; //set to 0 if less than 0
	
	return $commission;
}