Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Cells.FormatConditions.Delete
With Target.EntireRow
.FormatConditions.Add Type:=xlExpression, Formula1:="TRUE"
With .FormatConditions(1)
With .Borders(xlTop)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = 5
End With
With .Borders(xlBottom)
.LineStyle = xlContinuous
.Weight = xlThin
.ColorIndex = 5
End With
End With
.FormatConditions(1).Interior.ColorIndex = 20
End With

End Sub
How can I make this work with a write protected worksheet?