Reference excel cell from external powerpoint VBA.........is it possible?

[Solutionmatt]

Good Morning Guy's!

The issue i am having is linked to Excel, so I hope i can find a solution?

I have this VBA in PowerPoint which works perfectly as it is!

Sub hideme()

Dim x As Integer
On Error GoTo errhandler
For x = 1 To 6 ActivePresentation.slides(x).SlideShowTransition.Hidden = msoTrue
Next x
Exit Sub errhandler:

End Sub

Can one of the fine experts on here advise, or, correct this so the 1 to 6 can be a cell reference (I13) from an external excel file (filename.xlsm)?