Thanks Chuck but I've been trying this for the last day. I extend the line by dragging the point along the axis, then set a key frame, this will work for the 1st point. To change line direction I then add a point on the line near the one I moved so the line will stay at that value. Then I continue extending the line by dragging to the next value and set another key frame. The line would look similar to this //_/. When I do this the line will not animated from point to point, instead it will track from the final point to the starting point. Is there a certain order to add points and set key frames? Does anyone know of a tuitorial?