Hàm tách tên trong excel

Private Function Tachten(ten As String, lg As Integer)
Dim j As Integer
Name = Trim(ten)
For j = Len(Name) To 1 Step -1
If Mid(Name, j, 1) = " " Then
If lg = "1" Then
Tachten = Right(Name, Len(Name) - j)
Else
Tachten = Left(Name, j)
End If
Exit For
End If
Next
End Function