okay.. when trying different points on the target spline there was no effect, but with a different point on the starting shape the desired effect was achieved an the flow works as intended.

head >> wall

thanks for the help!

No problem macray - yes the specific location you click on both the base and target curves are significant. Try to click towards one end of each of them, on the sides that you want to use as the starting side for each of them.

If you click somewhere in the middle of the base curve that won't be good because the end closest to where you click is used as the start and if you click in the middle it won't be controlled very well.

- Michael