I am assuming that you created that in the floor plan then saved it out as a custom panel? Parts made like this are static and their coding illegible... You would need to script the panel from scratch in GDL in order for it to adjust to the varying distances between posts as well as bend to the curve.
I figure the best place to look for how to work with the curve would be the
Balusters macro. Then maybe the
Build-in Panel macro. In a different
thread, Barry figured out how the [b[Built-in Panel macro defines it's corners which you could probably still use, but the end solution would have to be different as this one does not seem work with a curved railing.
Ling.