Dim roule As Boolean
Sub start()
roule = True
Application.OnTime Now + 0.00001, "plusplus"
End Sub
Sub arrete()
roule = False
'[A1]=0'pour le remettre a zero
End Sub
Sub plusplus()
[a1] = Array([a1] + 1, 1)(Abs([a1] >= 15))
If roule Then Application.OnTime Now + 0.00001, "plusplus"
End Sub