Patch doesn’t output a trimmed surface even though trim is set to true

As the title says: ‘Patch doesn’t output a trimmed surface even though trim is set to true’. If anybody can tell me why this is happening, I’d appreciate it. Thanks!
image
arc patch.gh (5.7 KB)

the generating curve is open:

and note that you are generating one too many vectors compared to the number of points, so the very last point is getting moved two times:

you can apply the Expression x-1 to the Steps input of the Range, otherwise you get this:

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Ah, I see, thank you @inno!

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