i have designed a kitchen display system for my mobile food app. I have figured out how to make the kds play a sound when a new order arrives. i used the on-change data to play a sound when new data arrives. but the problem i am facing is, when there's an order and the chef changes the order status, it plays the sound again. How do i make it play only when a new order comes in and it doesn't play again when existing orders are modified?
