MsgBox if Yes do something, if No do something else

Hello,

I have a piece of cod for print, so I want to ask the user if the date is changed.
if the user hits Yes the code to print the sheets, if the user hits No the UserForm frmUpadte to be shown, he/she makes ...changes and that's all.

I appreciate your help!

Sub LIST_Button7_Click()
If MsgBox("Did you change the date?", vbYesNo + vbQuestion, "890") = vbYes Then
Application.ScreenUpdating = 0
Sheets("890").Visible = 1
Sheets("x-890").Visible = 1
Sheets("890").PrintOut Copies:=1
Sheets("x-890").PrintOut Copies:=1
Sheets("890").Visible = xlSheetVeryHidden
Sheets("x-890").Visible = xlSheetVeryHidden
Application.ScreenUpdating = 1
End If
'this is what I want to add....
frmUpdate.show
With frmUpdate
.TextBox8.Value="890"
.TextBox35.SetFocus
End With
End Sub

Try this

Sub LIST_Button7_Click()
If MsgBox("Did you change the date?", vbYesNo + vbQuestion, "890") = vbYes Then
Application.ScreenUpdating = 0
Sheets("890").Visible = 1
Sheets("x-890").Visible = 1
Sheets("890").PrintOut Copies:=1
Sheets("x-890").PrintOut Copies:=1
Sheets("890").Visible = xlSheetVeryHidden
Sheets("x-890").Visible = xlSheetVeryHidden
Application.ScreenUpdating = 1
'this is what I want to add....
else
frmUpdate.show
With frmUpdate
.TextBox8.Value="890"
.TextBox35.SetFocus
End With
End if
End Sub

Hi AlvaroSiza,
Thank you very much for your help. It works as I want!

Sub LIST_Button7_Click()

Dim vbResponse As VbMsgBoxResult

vbResponse = MsgBox("Did you change the date?", vbYesNo + vbQuestion, "890")

   If vbResponse = vbYes Then
      Application.ScreenUpdating = 0
      Sheets("890").Visible = 1
      Sheets("x-890").Visible = 1
      Sheets("890").PrintOut Copies:=1
      Sheets("x-890").PrintOut Copies:=1
      Sheets("890").Visible = xlSheetVeryHidden
      Sheets("x-890").Visible = xlSheetVeryHidden
      Application.ScreenUpdating = 1
   Else
      frmUpdate.Show
      With frmUpdate
         .TextBox8.Value = "890"
         .TextBox35.SetFocus
      End With
   End If

End Sub

Hi Arlu,
Thank you very much for help! it works!
yes, i tried it before but can't tell you why it did not worked, well...I am sure I missed something on the way!