AdaptiveComponent.ByPoints can not work

In my program.I want to place the imported handrails along the line.
But the AdaptiveComponent.ByPoints node always appears “The arguments have issues”.
Can someone help me with this problem? Thanks~

You need to divide your list into sublists. The length of the sublists is the number of adaptative points in your family (in your case for handrails it will be two I guess).

Here’s a way to proceed.