polycurvechain pch
      Creates a polycurve chain inside the tunnel designer.
    
    
        Creates a polycurve and adds one or more segments to it.
      
      
        
          polycurvechain Tunnel_1.SliceSurfaces[1]
        
        
          Creates a polycurve chain from the slice surface of Tunnel_1. The resulting polycurve chain can only be used when adding a rock bolts feature to it.
        
      
      
        <{1,...}: GeometricEntity'>'
      
      | {1,...} 1 ∞ | Sequence of one or more geometric entities | |
| GeometricEntity | Object | Name of the geometric entity on which polycurve chain is to be created | 
| Mode | Target | 
|---|---|
| Geometry | Global |