@kolem said: in a quadrangular that isn't co-planar you need an edge going across it so it will create the 'face', is there any way to flip the edge, i saw in Google's API, Sandbox you can but the file is *.rbs Can't you just get the endpoints and redraw the edge? You can actually flip an edge without redrawing it, but it's much more complicated. -Kwok

thanks a lot!

never mind i got it working, thanks for the help