I have created a walk cycle with Duik Bassel 2. My character is going to walk on the same position throughout the animation with a sliding background behind it. The character is going to stop walking at a few places so I need the background to stop moving as well. I could just keyframe the position of the background to stop at the same time as my character but I was wondering if there is a smarter way to animate the background to the walk cycle. Is there a way to write an expression that connects the background position to the general motion of my walk cycle?