Reference Plane. By Line for multiple lines

Hi, I am trying to part floors with reference planes, so I want to know if anyone knows how to create reference plane by line but for multiple lines. By the moment teh Reference Plane. By line node let me use one line, but I though with a Python Node it would be more easy, but I´m just Python beginner.
May be a loop : " for line in lines…Create a reference plane" Any one Knows if there is a method for that?

Changing to lacing longest should help the issue, you may want to keep the lines grouped together rather flattening them. This will also force you to play with the list at levels in the reference line node.

It works!

Some problems with exterior lines, do you know why?

I am not sure what that error means. But, I got the same result with grouping them. image

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