Question

I want to make my custom VBA function accept only a single-cell argument. What is the rightway of doing it:

• pass myCell as Cell

or:

• pass myRange as Range and get (how?) the left-upper cell by default?

Answer 1

If you select more than one cell the function will exit:

Function AcceptOneCell(rng As Range)

If (rng.Cells.Count > 1) Then
    AcceptOneCell = "Only allow 1 cell"
    Exit Function
End If

    ' your code here

End Function