Okay cool i think i fixed it, i was always return the left and top of the bounding box, now its returning the midY and midY.
i also added start and stop actions, and expression for fro targetx, targety, velocity, angle, and time
if not target is specified it will return -1 same for time, if not time is specified it will return 1, for velocity and agle, if they are not passed in i calculate them and return that. should upload new version shortly