Hi,
Unfortunatly, that action uses a function that do not permit updates, it uses the "SetRay" function. I should have named it so too, that's confusing, and the next update of playmaker vectrosity will correct this.
The hack right now would be to exit the state with "deleteOnExit" set to true, and come back to the state to draw the raw again, if you put a small timer on it, then it will update. If your goal is to debug, then that will do. If you want something a lot smoother, then, it will need to wait for propery 3d vectorline support... I must first finish mecanim/photon/ngui, so don't hesitate to bump this next week or something, thanks!
bye,
Jean