Imports RevisionManager
Imports System.Runtime.InteropServices

Module Example

    Sub Main()
        Dim objApplication As RevisionManager.Application = Nothing
        Dim objDocument As RevisionManager.Document = Nothing
        Dim objPropertySets As RevisionManager.PropertySets = Nothing
        Dim objProperties As RevisionManager.Properties = Nothing
        Dim objProperty As RevisionManager.Property = Nothing

        Try
            ' Start Revision Manager.
            objApplication = New RevisionManager.Application

            objPropertySets = objApplication.PropertySets
            objPropertySets.Open("C:\Part1.par", False)
            objProperties = objPropertySets.Item("Custom")
            objProperty = objProperties.Add("My Custom Property", "My Custom String")
            objPropertySets.Save()
        Catch ex As Exception
            ' Write any errors to console.
            Console.WriteLine(ex.Message)
        Finally
            ' Release COM Objects.
            If Not (objProperty Is Nothing) Then
                Marshal.ReleaseComObject(objProperty)
                objProperty = Nothing
            End If
            If Not (objProperties Is Nothing) Then
                Marshal.ReleaseComObject(objProperties)
                objProperties = Nothing
            End If
            If Not (objPropertySets Is Nothing) Then
                Marshal.ReleaseComObject(objPropertySets)
                objPropertySets = Nothing
            End If
            If Not (objDocument Is Nothing) Then
                Marshal.ReleaseComObject(objDocument)
                objDocument = Nothing
            End If
            If Not (objApplication Is Nothing) Then
                objApplication.Quit()
                Marshal.ReleaseComObject(objApplication)
                objApplication = Nothing
            End If
        End Try
    End Sub

End Module