Resetting a Presentation

Greetings,

I am attempting to create a user preference survey for computer services. I chose PowerPoint as I would be able to engage and hopefully hold the interest of the prospective client. This is not a mass mailing. Rather, it is a one on one session. I have figured out how to navigate through the presentation. Furthermore, it seems that when input is entered in the presentation, it is saved. That is what I want.

At the end of the survey, I would like to save the presentation and make it read only to keep the preferences entered by the client. I would share a fresh presentation on OneDrive for other clients.

I would also like to be able to give the client the option to reset the form if they wish. I am struggling with this. I will have ActiveX: textboxes, command buttons, checkboxes, optionbuttons and comboboxes. I would like to be able to reset these to defaults: textbox = "", checkbox = unchecked, optionbuttons = unchecked and comboboxes = 'Select'.

I took a stab at resetting the optionbuttons. Here is the code:

Private Sub xbutton_reset_Click()

Dim sl As Slide
Dim sh As Shape

For Each sl In ActivePresentation.Slides
For Each sh In sl.Shapes
If sh.Type = msoOLEControlObject Then
If sh.OLEFormat.ProgID = "Forms.OptionButton.1" Then
MsgBox sh.Name 'the msgbox printed optionbutton names only
'what code do I put here to set the value property of the option buttons to false?
End If
End If

Next sh
Next sl

End Sub

I was able to loop through all of the shapes in the presentation, identify the optionbuttons, and print the names of the buttons in the presentation. But I couldn't figure out how to set their value property to False.

I would also like to reset the rest of the controls. I was thinking about either a sub that took a shape object as an argument and then either case statements or if's to reset the values. I could always create a Sub for each control type as well.

I am rather new to VBA programming and am really struggling to cast a Shape object to specific controls in order to access their properties and methods. I would be very grateful if you could share your talent and experience with me.

Thanks,
Graham

EDIT:
I tripped over the solution to my question in another thread in this forum. I couldn't put in the link (apologies to moderator - newbie mistake). I'd like to thank Andy Pope for his answer and messhino for asking the right question. It was this code that I was missing:

If TypeName(sh.OLEFormat.Object) = "OptionButton" Then
sh.OLEFormat.Object.Value = False

If moderator sees this post, could you let me know how to give kudos to posters.

Thanks all,
Graham