I am trying to test the input value of textboxes in a userform. The correct
value to be entered is 1, 2, 3, or 4. There are four textboxes that execute
the MSValidate routine. The routines work and the incorrect entries are
caught but the problem is that both routines (see below) execute twice before
actually returning to the textbox to accept correct entry. I had placed
msgboxes throughout both routines to follow the flow.

Because I was not familiar with the CHANGE() event, I had inserted an
IF-THEN statement in the MSValidate routine to catch a negative number, not
knowing that as soon as I entered the "-" part of the neg number, the CHANGE
event executed.

If you can direct me to a better way to trap entries other than a 1-4,
please let me know.


Private Sub TextBox6_Change()
Dim TB As Integer
TB = 6
MSValidate (TB)
End Sub


Sub MSValidate(TB As Integer)
Dim MSQty, Config, Morphine, Ans, Ans1, NegNum As Integer
MSQty = Worksheets("Items").Range("Z3") ' Get MAX quantity of Morphine
Select Case TB
Case 6
Morphine = Val(TextBox6.Value)
Case 7
Morphine = Val(TextBox7.Value)
Case 8
Morphine = Val(TextBox8.Value)
Case 9
Morphine = Val(TextBox9.Value)
End Select
NegNum = 0
'MsgBox Morphine
If Morphine <= 0 Then
Config = vbOKOnly + vbExclamation
Ans1 = MsgBox("Invalid Quantity. Please enter a 1 - " & MSQty, Config)
NegNum = 1
GoTo Resetboxes
End If
If Morphine MSQty Then
Config = vbOKOnly + vbExclamation
Ans = MsgBox("Max quantity for Morphine is " & MSQty, Config)
If Ans = vbOK Then
GoTo Resetboxes
End If
End If
Resetboxes:
Select Case TB
Case 6
TextBox6 = ""
TextBox6.SetFocus
Case 7
TextBox7 = ""
TextBox7.SetFocus
Case 8
TextBox8 = ""
TextBox8.SetFocus
Case 9
TextBox9 = ""
TextBox9.SetFocus
End Select
End If
Morphine = 0
NegNum = 0
End Sub


Any ideas of why both execute twice?

Thanks,
Les