I draw a line with Shape, I want to change it with the time, how do I do? I've try: ` let s=new Zdog.Shape({ addTo: illo, path: [ // triangle { x: 0, y: -40 }, { x: 40, y: 40 }, { x: -40, y: 40 }, ], closed: false, // unclosed stroke: 20, color: '#636' }); s.path= [ // triangle { x: 0, y: -90 }, { x: 10, y: 40 }, { x: -40, y: 40 }, ]` but it seems that the new value of path is not updated :(