These following two examples demonstrate two possible approaches that can be used to creating a double array. The both achieve effectively the same result.

1. This function demonstrates a way to create an array of nodes:

   By creating a collection of points, then by passing no arguments to the child node's constructor, then returning the child node as the result of the function.

   transaction 1 modelChange 'Add baseCS'
   {
       node User.Objects.baseCS Bentley.GC.NodeTypes.CoordinateSystem
       {
           Technique                 = 'AtModelOrigin';
           DGNModelName              = '3D Metric Design';
           GraphLocation             = <auto> {40.0, 40.0};
       }
   }
   
   transaction 2 modelChange 'Function 1'
   {
       node User.Objects.floorPlanes Bentley.GC.NodeTypes.Plane
       {
           Function                  = Plane function (IPlane basePlane, double floorToFloorHeight, int numFloors)
                                       {
                                       Plane offsetPlane = {};
                                       for (int i = 0; i <= numFloors; ++i)
                                       {
                                       offsetPlane[i] = new Plane();
                                       offsetPlane[i].ParallelToPlaneAtOffsetDistance(basePlane, floorToFloorHeight * i);
                                       }
                                       return offsetPlane;
                                       };
           FunctionArguments         = {baseCS.XYPlane, 4.0, 9};
       }
   }
   

2. This function demonstrates a way to create an array of nodes in a ByFunction Method: Child nodes are created within a loop by passing 'this' to the child nodes' constructor. The 'Success' status of the top-level node is then set.

   transaction 1 modelChange 'Add baseCS'
   {
       node User.Objects.baseCS Bentley.GC.NodeTypes.CoordinateSystem
       {
           Technique                 = 'AtModelOrigin';
           DGNModelName              = '3D Metric Design';
           GraphLocation             = <auto> {40.0, 40.0};
       }
   }
   
   transaction 2 modelChange 'Function 2'
   {
       node User.Objects.floorPlanes Bentley.GC.NodeTypes.Plane
       {
           Function                  = bool function (IPlane basePlane, double floorToFloorHeight, int numFloors)
                                       {
                                       for (int i = 0; i <= numFloors; ++i)
                                       {
                                       Plane offsetPlane = new Plane(this);
                                       offsetPlane.ParallelToPlaneAtOffsetDistance(basePlane, floorToFloorHeight * i);
                                       }
                                       return true;
                                       };
           FunctionArguments         = {baseCS.XYPlane, 4.0, 9};
       }
   }