GetDataCell belongs to member filters, it cannot be used in Conditional Formatting statements.
Conditional Formatting rules can only look at the Cell contents and View Headers. So what you can do in your case is the following:
- create a new Column. As Member Filter, use GetDataCell to calculate the difference, e.g. GetDataCell(CVC(Col1) -CVC(Col2)):Name(Difference)
- On that column, apply a conditional format, e.g.
If (CellAmount > 0) Then
BackgroundColor=Red, TextColor=White
End If
If you don't want to show the number, simply set TextColor to the same as BackgoundColor (but note the number might leak anyway, when exported as Report or Excel), or play with number formatting to round it 0/1.