Surface.PointAtParameter - Single Value of Points

I’m having difficulty with a basic setup. Why is this only spitting out 1 row of points? Every other example on the forums has a matrix of points. The face is a system family floor face.

https://primer.dynamobim.org/06_Designing-with-Lists/6-1_whats-a-list.html
Look at the Lacing.

Your PointAtParameter Node is working with shortest lacing atm, it needs to be cross product for the grid.

I had no idea that existed. Thank you.