Automatic sketch boundary - Beam System

[Anonymous]

Is there a way to collect the closed loops used to create beam systems? I couldnt find an example or anything in the hepl file. I want to either window and filter for the loops, or pick each loop and create the beam systems all at once. Thanks.

[Joe.Ye]

BeamSystem.Profile property returns a CurveArray object that contains a list of the curve as the boundary.