I can't make a surface from points

hello i have here a rhino surface that is planar(trapeze shape)and did divide it into points when i move those points in z directions and i try to make a surface out of those point i get the null point in a grid as a notification how can i please make a surface like that please
problem.gh (18.8 KB)

That’s because your base geometry is a trimmed surface(which you didn’t internalise, so I made one…).
In this situation, you could use Copy Trim like this.

problem_re.gh (14.6 KB)


Great thank you so much!!!

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