Imports System.IO
Imports System.Runtime.InteropServices

Module Example
    <STAThread()> _
    Sub Main()
        Dim objApplication As SolidEdgeFramework.Application = Nothing
        Dim objPartDocument As SolidEdgePart.PartDocument = Nothing
        Dim objModels As SolidEdgePart.Models = Nothing
        Dim objModel As SolidEdgePart.Model = Nothing
        Dim objUnions As SolidEdgePart.Unions = Nothing
        Dim objUnion As SolidEdgePart.Union = Nothing
        Dim objTargetBodyunion(5) As Object
        Dim objToolBodyunion(5) As Object

        Try
            OleMessageFilter.Register()

            objApplication = Marshal.GetActiveObject("SolidEdge.Application")
            objPartDocument = objApplication.ActiveDocument

            ' get the Model collection
            objModels = objPartDocument.Models

            objTargetBodyunion(0) = objModels.Item(1).Body
            objToolBodyunion(0) = objModels.Item(2).Body
            objToolBodyunion(1) = objModels.Item(3).Body
            objToolBodyunion(2) = objModels.Item(4).Body

            objModel = objModels.Item(1)
            objUnions = objModel.Unions
            objUnion = objUnions.Item(1)

        Catch ex As Exception
            Console.WriteLine(ex.Message)
        Finally
            OleMessageFilter.Revoke()
        End Try
    End Sub
End Module