Dana:

Thank you for your insights - I applied your suggestions and the code now
works!! I am now aware of the Index functionality - thanks again

Dana DeLouis wrote:
However, I cannot access the columns correctly...

Hi. One way is via Index ...

Sub Demo()
Dim M As Variant
Dim Slp As Double
Dim C As Long

M = [A1:C10].Value
With WorksheetFunction
For C = 1 To 2
Slp = .Slope(.Index(M, 0, 3), .Index(M, 0, C))
Debug.Print Slp
Next C
End With
End Sub

Hello all:

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