Hi,
I hope this demonstrates the basic idea. As spinbutton changes the value is
put into textbox17.
The code I gave you goes in the change event for text box 17 and executes
brcause the value is changing and up dates textbooxes 18 & 19 with the
results of the sum.
Private Sub SpinButton4_Change()
TextBox17.Value = SpinButton4.Value
End Sub
Private Sub TextBox17_Change()
Dim MSht As Variant
Set MSht = Sheets("Sheet2")
With MSht
TextBox18 = .Range("B1") / 28 + .Range("B3")
TextBox19 = (1013 - .Range("B4")) * 28
End With
End Sub
Mike