How to play this trick?

Hello @mavisngai . I am not quite clear what you are trying to ask here. Is it about the gumball machines or the curly black strings? The black wavy strings block anything. If you make a match next to these one layer will come off. If they look like in your screenshot then one more match next to them will remove them. After the black wavy string is gone, then making a match next to the gumball machine it will take a hit. How many hits these take before they disappear will depend on the order which I cannot see on your screen selection. If you need more help please show us the entire screenshot of the whole board.