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<?php
//* Do NOT include the opening php tag, only copy the code below to functions.php file

add_filter( 'woocommerce_appointments_gcal_sync_statuses', 'gcal_sync_unpaid_statuse' );
function gcal_sync_unpaid_statuse( $sync_statuses ) {
	//* Sync with unpaid appointments
	array_push( $sync_statuses, 'unpaid' );
		
	return $sync_statuses;
}