Hmm... True... True... But, again, I don't know all the limitations of JJ2. But, then again, maybe my ideas don't have to bend the rules, it could -- temporarily -- create Belt events under the Event for Side-to-side movement, and -- believe me -- that's all you really need. You could find another work-around for moving them up/down, and another suggestion is to have the paths have a setting to make them loop, and another to have them have a ping-pong loop(As in, they do the path, then they do it reversed, then they do it normally, then reversed etc.) setting. Although, I'm not sure temporarily creating events is possible. Unless you have it so that it changes its speed between one you define and zero by storing the numbers in a Variable?