Why is my formula reversed when I click on the line, I have been unable to find the reason, ask everyone to help me find the reason?

Why is my formula reversed when I click on the line, I have been unable to find the reason, ask everyone to help me find the reason?

桥梁扶手1.gh (31.3 KB)

Check red group.


桥梁扶手1_re.gh (33.0 KB)

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