You've disabled the forking of your pens. Makes it really hard to copy your work and apply fixes for it, I had to manually copy over all the code to a new pen. Just FYI.   You have the variable control, but as far as I see you never update its value, it is always zero.   Personally when in doubt I use a timeline, so I've converted your tween to a timeline. This gets you more options and is overall more flexible.    My thought process was, I want to map the x axis mo