Private Sub Form_Load()
    Dim objApp As SolidEdgeFrameWork.Application
    Dim objDoc As SolidEdgeAssembly.AssemblyDocument
    Dim objOccurrence As SolidEdgeAssembly.Occurrence
    ' Local variables to be declared here
    Const TESTFILE = "T:\vbtests\testcases\Sample.asm"
    Dim bActivate As Boolean
    ' Create/get the application with specific settings
    On Error Resume Next
    Set objApp = GetObject(, "SolidEdge.Application")
    If Err Then
        Err.Clear
        Set objApp = CreateObject("SolidEdge.Application")
        Set objDoc = objApp.Documents.Add("SolidEdge.AssemblyDocument")
        objApp.Visible = True
    Else
        Set objDoc = objApp.ActiveDocument
    End If
    On Error GoTo 0
    'Open an existing assembly Document
    Set objDoc = objApp.Documents.Open(TESTFILE)
    'Get an Occurrence in the assembly
    Set objOccurrence = objDoc.Occurrences.Item(3)
    'Get the Display state of this Occurrence i.e, Activated or LitePart
    bActivate = objOccurrence.Activate
    'Change the display state
    objOccurrence.Activate = Not bActivate
    ' Release objects
    Set objApp = Nothing
    Set objDoc = Nothing
    Set objOccurrence = Nothing
End Sub