Backpack the "SPRINGS" sprite, which contains all of the code blocks you need. When you bring it into your game, drag the code blocks into whatever sprite you want to be springy. This will automatically bring over all of the list variables needed (and don't worry, they will be "for this sprite only"). Then you can remove the SPRINGS sprite when you are done.
For help creating spring effects, use this visual helper! https://scratch.mit.edu/projects/1149187110/ For example of stuff you can do with SPRINGS, see my studio! https://scratch.mit.edu/studios/36437845
