How to work with the range method with only one specific cell? - excel

Question

I would like the cells I have selected in the spreadsheet to receive the +1 increment. The code below works fine when I have a range, but when I have only one cells selected the code adds +1 to every cell in the spreadsheet.
Sub Macro_MAIS_1()
'
' Macro_MAIS_1 Macro
'
'
Dim AlocationWorksheet As Worksheet
Dim ActSheet As Worksheet
Dim SelRange As Range
Dim iCells As Integer
On Error GoTo Fim
Set AlocationWorksheet = Worksheets("ALOCAÇÃO")
AlocationWorksheet.Unprotect
Set ActSheet = ActiveSheet
Set SelRange = Selection.SpecialCells(xlCellTypeVisible)
iCells = SelRange.Cells.Count
Range("O7").Select
Selection.Copy
SelRange.PasteSpecial Paste:=xlPasteValues, Operation:=xlAdd, SkipBlanks _
:=False, Transpose:=False
Exit Sub
Fim:
MsgBox Selection.Address
Range("O7").Select
Selection.Copy
SelRange.PasteSpecial Paste:=xlPasteValues, Operation:=xlAdd, SkipBlanks _
:=False, Transpose:=False
End Sub

Answer 1

I would avoid using a selection, but this should work. If you have text you'll run into trouble and need to write out some checks. You also should not be counting all cells, as you might have an overflow of values. Check rows and columns, but not both.
Sub addPlusOne()
Dim aRange As Range, i As Long, j As Long
Set aRange = Selection
If aRange.Rows.Count > 1 Or aRange.Columns.Count > 1 Then
Dim zRng()
zRng = aRange.Value
For i = LBound(zRng) To UBound(zRng)
For j = LBound(zRng, 2) To UBound(zRng, 2)
zRng(i, j) = zRng(i, j) + 1
Next j
Next i
aRange.Value = zRng
Else
aRange.Value = aRange.Value + 1
End If
End Sub
EDIT: OP commented that they want to use visible selection. While this isn't best practice, this will work.
Sub plusOneOnSelection()
Dim aCell As Range
For Each aCell In Selection.SpecialCells(xlCellTypeVisible).Cells
If IsNumeric(aCell) Then aCell.Value = aCell.Value + 1
Next aCell
End Sub