DBDictionary RasterImageDef

[VB_Autocad_guy]

Do I need to do anything besides Commit to complete a change in the DBDictionary? 

                For Each dicentry As Autodesk.AutoCAD.DatabaseServices.DBDictionaryEntry In imageDict
                    Dim myRasterImgDef As Autodesk.AutoCAD.DatabaseServices.RasterImageDef = _
                    CType(myTrans.GetObject(CType(dicentry.Value, Autodesk.AutoCAD.DatabaseServices.ObjectId), _
                                             Autodesk.AutoCAD.DatabaseServices.OpenMode.ForWrite),  _
                                              Autodesk.AutoCAD.DatabaseServices.RasterImageDef)


                    'Find Matching RasterImage
                    For Each ImgAttachment In RasterImgCol
                        If myRasterImgDef.Handle.ToString = ImgAttachment.Handle Then
                            myRasterImgDef.SourceFileName = ImgAttachment.NewName 'Reset Autocad's RasterImage Reference FullFileName
                        End If
                    Next

                Next

              

                'Commit Transaction
                myTrans.Commit()