yes… more or less. Those if/else statements control the back and forth movement of the figures. Depending on how you want your ‘figures’ to move, these statements may change or not even exist. If you dont want them to go back and forth, you can ommit them… but it sounds like you may instead want to edit them to have a goto call when the z reaches a certain point … whether more than 5500? or maybe less thatn -300? Its up to you based on what you use in that if statement.