Public Function BuildMultiProjectProgressGraph( _
   Optional ByVal GroupByField As String = "", _
   Optional ByVal SumOfField As String = "", _
   Optional ByVal SelectedProjects As String = "", _
   Optional ByVal ByHistory As Boolean = True, _
   Optional ByVal MajorSkip As Long = 0, _
   Optional ByVal MinorSkip As Long = 1, _
   Optional ByVal MaxCols As Long = 0, _
   Optional ByVal Filter As Variant, _
   Optional ByVal FRDate As Variant, _
   Optional ByVal ForceRefresh As Boolean = False, _
   Optional ByVal ShowFullPath As Boolean = False, _
   Optional ByVal ShowNullParents As Boolean = False _
) As Object