Want to draw a line from one corner to the other in a subsurface i have, i divide the srf in 1U and 1V, so i could get the four points P and draw the line using "list item" to get the points; but SDivide outputs four points grouped in two items, 0 and 1.
did you try flattening? i havent tried it but i heard that in the new versions of GH that the sdivide command was a little different. ive read that flattening can help with this