delete pictures from slides in powerpoint from excel - excel

Question

I tried to figured out why the coding is not working, but the following code was supposed to open from excel a powerpoint and clear the existing slides in order to replace with new picture - however I'm getting the following:
error 91: Object variable or with block variable not set.
I tried several others code from the Stack but cannot make it work.. any help please? The deck contains slide 2 to slide 9 to cleared out.
Sub ppt_export()
Dim DestinationPPT As String
Dim ppApp As PowerPoint.Application
Dim ppPres As PowerPoint.Presentation
Dim objApp As Object, objSlide As Object, ObjShp As Object, objTable As` Object
DestinationPPT = "C:\Users\\Desktop\Summary.pptx"
Set ppApp = CreateObject("PowerPoint.Application")
Set ppPres = ppApp.Presentations.Open(DestinationPPT)
'delete the shapes from the renew the template
For i = ppSlide.Shapes.Count To 1 Step -1
Set ppShape = ppSlide.Shapes(p)
If ppShape.Type = msoPicture Then ppShape.Delete
Next
End Sub
I'd like to know how to correct the code in order to continue the coding with copying excel worksheets as pictures into the respective slide.

Answer 1

First and most importantly, add Option Explicit to the top of the code module, and it will flag the various undeclared variables you have: p, i, ppSlide, and ppShape.
Then the code might look something like this:
Option Explicit
Sub ExportToPPT()
Dim ppApp As PowerPoint.Application
Set ppApp = New PowerPoint.Application
Dim ppFileName As String
ppFileName = "C:\Users\\Desktop\Summary.pptx"
Dim ppPres As PowerPoint.Presentation
Set ppPres = ppApp.Presentations.Open(Filename:=ppFileName)
Dim ppSlide As PowerPoint.Slide
Dim i As Integer
For i = 2 To 9
Set ppSlide = ppPres.Slides(i)
Dim j As Integer
For j = ppSlide.Shapes.Count To 1 Step -1
If ppSlide.Shapes(j).Type = msoPicture Then
ppSlide.Shapes(j).Delete
End If
Next j
Next i
End Sub