Sub AddTextOnRight()
'Updateby20131128
Dim Rng As Range
Dim WorkRng As Range
Dim addStr As String
On Error Resume Next
xTitleId = "Hoc Excel Online"
Set WorkRng = Application.Selection
Set WorkRng = Application.InputBox("Range", xTitleId, WorkRng.Address, Type:=8)
addStr = Application.InputBox("Add text", xTitleId, "", Type:=2)
For Each Rng In WorkRng
    Rng.Value = Rng.Value & addStr
Next
End Sub