Oh I didn't know that % represents a modulus calculation. Thanks
Got 2 more challenge I would need your help with.
1) I managed to create each level buttons but how do I center them all so for different phone sizes, it still centers everything
img1
2) In that tutorial, when you swipe, the screen slides slowly to stop but mine with the same configuration swipes and stops immediately, so no slowdown movement. This has to do with the "On DragDrop drop" block