Want to flip the boundary


Hello, I want to get the flipped boundary but I am missing the steps to work it out.
does someone know how to do that?
Best Keisuke
residence vilamoura option3 after.gh (53.3 KB)

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residence vilamoura option3 after_re.gh (13.3 KB)

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Dear HS_Kim
Thank you as always!
Everything going well!
Best, Keisuke