Export from Excel to powerpoint using VBA

Dear All,
I am new to VBA programmining and for the first time trying to export excel data to powerpoint. The code I have compiled from sources on the web is as follows but does not work.

Sub CreateSlides()
'Step 1: Declare your variables
  Dim PP As PowerPoint.Application
  Dim oSl As PowerPoint.Slide
    Dim oSh As PowerPoint.Shape

  'Dim PPPres As PowerPoint.Presentation
  'Dim PPSlide As PowerPoint.Slide
  'Dim SlideTitle As String
  
'Step 2: Open PowerPoint and create new presentation
  Set PP = New PowerPoint.Application
  Set PPPres = PP.Presentations.Add
  PP.Visible = True
  ActivePresentation.Slides(1).Copy
    Set oSl = ActivePresentation.Slides.Paste(ActivePresentation.Slides.Count + 1)
'Open the Excel workbook. Change the filename here.
Dim OWB As New Excel.Workbook
Set OWB = Excel.Application.Workbooks.Open("C:\users\CABS\desktop\WeeklyReturn.xlsm")
  
'Grab the first Worksheet in the Workbook
Dim WS As Excel.Worksheet
Dim sCurrentText As String
Dim Slidenum As Integer
Set WS = OWB.Worksheets("Master")
Dim i As Long
'Loop through each used row in Column A
For i = 1 To WS.Range("A65536").End(xlUp).Row

    'Copy the first slide and paste at the end of the presentation
    ActivePresentation.Slides(1).Copy
    Set oSl = ActivePresentation.Slides.Paste(ActivePresentation.Slides.Count + 1)
    sCurrentText = WS.Cells(i, 1).Value
    '------------
    'Slidenum = 1
    oSl.Select
    Set oSh = oSl.Shapes("Table1")

    Sheets("Sheet1").Activate
    oPPTShape.Table.Cell(i, 1).Shape.TextFrame.TextRange.Text = sCurrentText
    'oPPTShape.Table.Cell(1, 2).Shape.TextFrame.TextRange.Text = Cells(1, 2).Text
    'oPPTShape.Table.Cell(1, 3).Shape.TextFrame.TextRange.Text = Cells(1, 3).Text
    'oPPTShape.Table.Cell(2, 1).Shape.TextFrame.TextRange.Text = Cells(2, 1).Text
    'oPPTShape.Table.Cell(2, 2).Shape.TextFrame.TextRange.Text = Cells(2, 2).Text
    'oPPTShape.Table.Cell(2, 3).Shape.TextFrame.TextRange.Text = Cells(2, 3).Text
    '--------------------------
    
    
    ' find each shape with "@COL1@" in text, replace it with value from worksheet
 '   For Each oSh In oSl.Shapes
      ' Make sure the shape can hold text and if is, that it IS holding text
 '     If oSh.HasTextFrame Then
 '       If oSh.TextFrame.HasText Then
 '         ' it's got text, do the replace
         ' With oSh.TextFrame.TextRange
            '.Replace "@COL1@", sCurrentText
          'End With
 '       End If
 '     End If
  '  Next
Next
End Sub

Request help