Sub nexttick()
Range("B1").Value = Range("B1").Value - TimeValue("00:00:01")
If Range("B1").Value <= TimeValue("00:00:01") Then
sheet3.Shapes("textbox1").Fill.forcolor.RGB = RGB(255, 0, 0)
Else
ActiveSheet.Shapes("TextBox 1").Fill.ForeColor.RGB = RGB(255, 255, 255)
End If
starttimer
End Sub