Problem creating a Countdown Timer with Button Inputs

#include <ButtonConstants.au3>
#include <ComboConstants.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
 
Global $_CompteArebour = 100000, $_Minutes, $_Seconds
$TimeTicks = TimerInit()
$teamOneScore = 0
$teamTwoScore = 0
 
#Region ### START Koda GUI section ### Form=
$Form1 = GUICreate("ImproTimer", 946, 535, -1, -1)
$MenuItem1 = GUICtrlCreateMenu("?")
$AboutMenuItem = GUICtrlCreateMenu("About" & @TAB & "Ctrl+A")
$GroupTeam1 = GUICtrlCreateGroup("", 80, 32, 257, 225)
$GraphicTeam1 = GUICtrlCreateGraphic(88, 48, 240, 200)
$Team1Score = GUICtrlCreateLabel($teamOneScore, 160, 56, 98, 146, BitOR($SS_CENTER, $SS_CENTERIMAGE))
GUICtrlSetFont($teamOneScore, 120, 400, 0, "MS Sans Serif")
GUICtrlCreateGroup("", -99, -99, 1, 1)
$ComboTeam1 = GUICtrlCreateCombo("Couleur", 8, 40, 65, 25, BitOR($CBS_DROPDOWN, $CBS_AUTOHSCROLL))
GUICtrlSetData(-1, "Blanc|Bleu|Rouge|Orange|Jaune|Vert")
$GroupTeam2 = GUICtrlCreateGroup("", 608, 32, 257, 225)
$GraphicTeam2 = GUICtrlCreateGraphic(616, 48, 240, 200)
$Team2Score = GUICtrlCreateLabel($teamTwoScore, 664, 56, 152, 146, BitOR($SS_CENTER, $SS_CENTERIMAGE))
GUICtrlSetFont($teamTwoScore, 120, 400, 0, "MS Sans Serif")
GUICtrlCreateGroup("", -99, -99, 1, 1)
$ComboTeam2 = GUICtrlCreateCombo("Couleur", 872, 40, 65, 25, BitOR($CBS_DROPDOWN, $CBS_AUTOHSCROLL))
GUICtrlSetData(-1, "Blanc|Bleu|Rouge|Orange|Jaune|Vert")
$TimerLabel = GUICtrlCreateLabel("", 352, 40, 247, 125, BitOR($SS_CENTER, $SS_CENTERIMAGE))
;~ $Graphic1 = GUICtrlCreateGraphic( 352, 72, 247, 115)
;~ GUICtrlSetBkColor($Graphic1, 0x0033CC)
GUICtrlSetData($TimerLabel, StringFormat("%02u" & ":" & "%02u", $_Minutes, $_Seconds))
GUICtrlSetFont($TimerLabel, 72, 400, 0, "MS Sans Serif")
$BtnStart = GUICtrlCreateButton("Start", 352, 168, 121, 33)
$BtnPause = GUICtrlCreateButton("Pause", 352, 168, 121, 33)
GUICtrlSetState(-1, $GUI_HIDE)
$BtnReset = GUICtrlCreateButton("Reset", 480, 168, 121, 33)
$BtnAdd60 = GUICtrlCreateButton("+1 Min", 352, 208, 57, 33)
$BtnAdd30 = GUICtrlCreateButton("+30 Sec", 416, 208, 57, 33)
$BtnAdd10 = GUICtrlCreateButton("+10 Sec", 480, 208, 57, 33)
$BtnAdd5 = GUICtrlCreateButton("+5 Sec", 544, 208, 57, 33)
$PPT1 = GUICtrlCreateButton("+ 1", 8, 104, 65, 33)
$MPT1 = GUICtrlCreateButton("- 1", 8, 160, 65, 33)
$PPT2 = GUICtrlCreateButton("+ 1", 872, 104, 65, 33)
$MPT2 = GUICtrlCreateButton("- 1", 872, 160, 65, 33)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###
 
While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $BtnStart
            GUICtrlSetState($BtnStart, $GUI_HIDE)
            GUICtrlSetState($BtnPause, $GUI_SHOW)
            _Run()
        Case $ComboTeam1
            $sComboRead = ""
            $sComboRead = GUICtrlRead($ComboTeam1)
            If $sComboRead = "Blanc" Then
                GUICtrlSetBkColor($GraphicTeam1, 0xFFFFFF)
            ElseIf $sComboRead = "Bleu" Then
                GUICtrlSetBkColor($GraphicTeam1, 0x0033CC)
            ElseIf $sComboRead = "Rouge" Then
                GUICtrlSetBkColor($GraphicTeam1, 0xFF3030)
            ElseIf $sComboRead = "Orange" Then
                GUICtrlSetBkColor($GraphicTeam1, 0xFF6600)
            ElseIf $sComboRead = "Jaune" Then
                GUICtrlSetBkColor($GraphicTeam1, 0xFFFF33)
            ElseIf $sComboRead = "Vert" Then
                GUICtrlSetBkColor($GraphicTeam1, 0x009933)
            EndIf
        Case $ComboTeam2
            $sComboRead = ""
            $sComboRead = GUICtrlRead($ComboTeam2)
            If $sComboRead = "Blanc" Then
                GUICtrlSetBkColor($GraphicTeam2, 0xFFFFFF)
            ElseIf $sComboRead = "Bleu" Then
                GUICtrlSetBkColor($GraphicTeam2, 0x0033CC)
            ElseIf $sComboRead = "Rouge" Then
                GUICtrlSetBkColor($GraphicTeam2, 0xFF3030)
            ElseIf $sComboRead = "Orange" Then
                GUICtrlSetBkColor($GraphicTeam2, 0xFF6600)
            ElseIf $sComboRead = "Jaune" Then
                GUICtrlSetBkColor($GraphicTeam2, 0xFFFF33)
            ElseIf $sComboRead = "Vert" Then
                GUICtrlSetBkColor($GraphicTeam2, 0x009933)
            EndIf
        Case $BtnAdd60
            $_CompteArebour = $_CompteArebour + 100000
        Case $BtnAdd30
            $_CompteArebour = $_CompteArebour + 30000
        Case $BtnAdd10
            $_CompteArebour = $_CompteArebour + 10000
        Case $BtnAdd5
            $_CompteArebour = $_CompteArebour + 5000
        Case $BtnReset
;~          $_CompteArebour = 0
        Case $AboutMenuItem
        Case $PPT1
            $teamOneScore = $teamOneScore + 1
            $Team1Score = GUICtrlCreateLabel($teamOneScore, 160, 56, 98, 146, BitOR($SS_CENTER, $SS_CENTERIMAGE))
        Case $MPT1
            $teamOneScore = $teamOneScore - 1
            $Team1Score = GUICtrlCreateLabel($teamOneScore, 160, 56, 98, 146, BitOR($SS_CENTER, $SS_CENTERIMAGE))
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd
 
 
Func _Run()
    While 1
        _Check()
    WEnd
EndFunc   ;==>_Run
 
Func _Check()
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $BtnStart
            GUICtrlSetState($BtnStart, $GUI_HIDE)
            GUICtrlSetState($BtnPause, $GUI_SHOW)
            _Run()
        Case $BtnPause
            GUICtrlSetState($BtnPause, $GUI_HIDE)
            GUICtrlSetState($BtnStart, $GUI_SHOW)
        Case $BtnReset
;~          $_CompteArebour = 0
        Case $BtnAdd60
            $_CompteArebour = $_CompteArebour + 60000
        Case $BtnAdd30
            $_CompteArebour = $_CompteArebour + 30000
        Case $BtnAdd10
            $_CompteArebour = $_CompteArebour + 10000
        Case $BtnAdd5
            $_CompteArebour = $_CompteArebour + 5000
    EndSwitch
 
    Local $_MinCalc = Int($_CompteArebour / (60 * 1000)), $_SecCalc = $_CompteArebour - ($_MinCalc * 60 * 1000)
    $_SecCalc = Int($_SecCalc / 1000)
 
    $_CompteArebour -= TimerDiff($TimeTicks)
    $TimeTicks = TimerInit()
    Local $_MinCalc = Int($_CompteArebour / (60 * 1000)), $_SecCalc = $_CompteArebour - ($_MinCalc * 60 * 1000)
    $_SecCalc = Int($_SecCalc / 1000)
    If $_MinCalc <= 0 And $_SecCalc <= 0 Then
        GUISetBkColor(0xFF0000, $Form1)
        GUICtrlSetData($TimerLabel, "Fini!")
        Sleep(1000)
        GUICtrlSetData($TimerLabel, StringFormat("%02u" & ":" & "%02u", $_Minutes, $_Seconds))
        ; If @Compiled Then Shutdown ( 13 )
    Else
        If $_MinCalc <> $_Minutes Or $_SecCalc <> $_Seconds Then
            $_Minutes = $_MinCalc
            $_Seconds = $_SecCalc
            GUICtrlSetData($TimerLabel, StringFormat("%02u" & ":" & "%02u", $_Minutes, $_Seconds))
            If $_Minutes = 0 And $_Seconds <= 10 Then
                Beep(1200, 100)
                GUISetBkColor(0xA093FF, $Form1)
            EndIf
        EndIf
    EndIf
EndFunc   ;==>_Check