ehm, why not use an array?
code:
Dim strMyString(20) As String
Private Sub Form_Load()
strMyString(1) = "..."
strMyString(2) = "..."
End Sub
Private Sub Command1_Click()
Static lngTimes As Long
lngTimes = lngTimes + 1
Label1.Caption = strMyString(lngTimes)
End Sub