Refer To An Array Variable In A Formula

I'm trying to use arrays in a macro!

Here's my


Sub ArrayTest()
'
' ArrayTest Macro
'
Dim Array1() As Variant, Array2() As Variant
Dim R As Integer, ilR1 As Integer, iLR2 As Integer
ilR1 = Cells(Rows.Count, 1).End(xlUp).Row
iLR2 = Cells(Rows.Count, 7).End(xlUp).Row
ReDim Array1(1 To ilR1)
ReDim Array2(1 To iLR2)
For R = 1 To ilR1
Array1(R) = Cells(R, 1) & Cells(R, 2) & Cells(R, 3)
Next R
For R = 1 To iLR2
Array2(R) = Cells(R, 7) & Cells(R, 8) & Cells(R, 9)
Next R
For R = 2 To UBound(Array1)
If WorksheetFunction.CountIf(?????, Array1(R)) > 0 Then Cells(R, 4) = "old" Else Cells(R, 4) = "new"
Next R
'
End Sub

Basically, the macro concatenates the content of three columns from two different tables into two arrays. Array1 contains the current stuff and Array2, the old one. If I CountIf items from Array1 into the content of Array2, I should get what's new (count 0).

Now, ? in the code should refer to the content of Array2. How do I do that?

The errors I get are 424 object required [Array(iLR2)], 1004 method 'Range' of object '_Global' failed [Range(Array2) or Range(Array2(2), Array2(iLR2))], or type mismatched [Array2].