With Selection.Validation
.Delete
.Add Type:=xlValidateTextLength, AlertStyle:=xlValidAlertStop, _
Operator:=xlBetween, Formula1:="0", Formula2:="6"
.IgnoreBlank = True
.InCellDropdown = True
.InputTitle = ""
.ErrorTitle = ""
.InputMessage = ""
.ErrorMessage = ""
.ShowInput = True
.ShowError = True
End With