Help me, BlitzPlus

Well, I got this code problem, I turned my little proggy into a popup spammer by accident, don't try this at home,
its kind of annoying :|

So I was trying the SelectedGadgetItem that soja told me to look at for my question on how to know what tabber the user selected so I came out with this piece of buggy code :D

Code Below

If file_open = True Then

  mainTabber=CreateTabber( 0,0,w,h,WinHandle )
 SetGadgetLayout mainTabber,1,1,1,1
 InsertGadgetItem(mainTabber,0,"0")
 InsertGadgetItem(mainTabber,1,"1")
 InsertGadgetItem(mainTabber,2,"2")
 UpdateWindowMenu WinHandle

  Tabber = SelectedGadgetItem( mainTabber )
  Messager = 0
 Select Tabber

    Case 0
    If Messager = 0 Then
    Notify "Tabber 1"
    Messager = messager + 1
    EndIf

    Case 1
    If Messager = 1 Then
    Notify "Tabber 1"
    Messager = messager + 1
    EndIf

    Case 2
    If Messager = 2 Then
    Notify "Tabber 1"
    Messager = messager + 1
    EndIf

 End Select
EndIf

I have no clue what so ever on what I did wrong :|
The code is in My main program loop.

Problem is:
it keeps poping popups when its at the last tabber "layers". But the number should be 3 on the messager variable, and the popup should only appear when the variable is 2 not 3.