Private Sub Form_Load()
    Dim objApp As solidedgeFramework.Application
    Dim objDoc As solidedgeAssembly.AssemblyDocument
    Dim bDirty As Boolean
    ' Report errors
    Const PI = 3.14159265358979
    ' 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
    ' Before updating the active document check the Dirty property. _
      It should returns FALSE specifying that the document has NOT been modified.
    bDirty = objDoc.Dirty
    If bDirty <> False Then
        MsgBox (" Dirty property of the Assembly Document object fails")
    End If
    ' Do a Fit in the active document. This is one way of updating the document. _
      So Dirty property should return TRUE specifying that the document _
      has been modified.
    Call objDoc.Windows(1).View.Fit
    bDirty = objDoc.Dirty
    If bDirty = False Then
        MsgBox (" Dirty property of the Assembly Document object fails")
    End If

    ' USER DISPLAY
    ' Release objects
    Set objApp = Nothing
    Set objDoc = Nothing
End Sub