Macro to replace a sheet format

I have this macro to replace the sheet format. There is no error to run it; however,  the active sheet format (actually the title block) is not replaced by the one in c:\temp

Thx

Public swApp                        As SldWorks.SldWorks
Public swModel                      As SldWorks.ModelDoc2
Public swDraw                       As SldWorks.DrawingDoc
Public swSheet                      As SldWorks.Sheet

Public Const sTemplatePath          As String = "c:\temp\"


Sub main()
   
Set swApp = Application.SldWorks
Set swModel = swApp.ActiveDoc

   
    If (swModel Is Nothing) Then
        MsgBox "No active drawing found in SolidWorks." & Chr(13) & Chr(13) _
            & "Please Open a SolidWorks drawing ", vbExclamation
        End
    End If
   
    If (swModel.GetType <> swDocDRAWING) Then
        MsgBox "Current document is not a drawing." & Chr(13) & Chr(13) _
            & "Please Open a SolidWorks drawing ", vbExclamation
        End
    End If   
   
   
    Set swDraw = swModel
    Set swSheet = swDraw.GetCurrentSheet
    
   
    Dim aProps As Variant
    Dim ScaleNumerator As Double
    Dim ScaleDenominator As Double
    aProps = swDraw.GetCurrentSheet.GetProperties

    ScaleNumerator = aProps(2)
    ScaleDenominator = aProps(3)
    'MsgBox (ScaleNumerator, "    ", ScaleDenominator)

    Dim bRet                        As Boolean
    Dim sPath                       As String
    sPath = sTemplatePath & "B_Size_TitleBlock.slddrt"
    bRet = swDraw.SetupSheet4(swSheet.GetName, swDwgPaperBsize, swDwgTemplateCustom, ScaleNumerator, ScaleDenominator, False, sPath, 0.4318, 0.2794, "Default")
  
    swModel.ForceRebuild3 (False)
   
   
    Set swApp = Nothing: Set swModel = Nothing: Set swDraw = Nothing: Set swSheet = Nothing
End Sub

SolidworksApi macros