iframes Webdriver

func test(byref sSession, $sXpath)   
 Local $btn
    Local $frameCount = _WD_GetFrameCount($sSession)

    If $frameCount > 0 Then
        For $i = 0 To $frameCount - 1 Step 1
            _WD_FrameEnter($sSession, $i) ; hier betritt er die Frames, 

            $btn = _WD_WaitElement($sSession, $_WD_LOCATOR_ByXPath, $sXpath, 0, 150)
            If StringLen($btn) > 0 Then
                _WD_ElementAction($sSession, $btn, 'click')
                _WD_LoadWait($sSession, 5000, 10000)
               ExitLoop
            ElseIf $frameCount = 0 Then
                $btn = _WD_WaitElement($sSession, $_WD_LOCATOR_ByXPath, $sXpath, 0, 5000)
                _WD_ElementAction($sSession, $btn, 'click')
            EndIf
        Next
        MsgBox(0,  '0', NULL)
        _WD_FrameEnter($sSession, Null); <-- ich habe keine Ahnung ob das richtig ist, ich wollte wieder auf den Standard Frame zurück.
    EndIf
endfunc

$Capabilities_edge = SetupEdge(False)
$oSession = _WD_CreateSession($Capabilities_edge)

_WD_Navigate($oSession, $link)

$btn = _WD_WaitElement($oSession, $_WD_LOCATOR_ByXPath, '//*[@id="login_submit"]', 0, 5000)
IF @Error Then MsgBox(0, 'Error', 'error')

$input_user = _WD_WaitElement($oSession, 'xpath', '//*[@id="username"]', 0, 2)
$input_pass = _WD_WaitElement($oSession, 'xpath', '//*[@id="password"]', 0, 2)

_WD_ElementAction($oSession, $input_user, 'clear')
_WD_SetElementValue($oSession, $input_user, $login)
_WD_ElementAction($oSession, $input_pass, 'clear')
_WD_SetElementValue($oSession, $input_pass, $passwort)
_WD_ElementAction($oSession, $btn, 'click')

test($oSession, '//*[@id="ToolJa"]') ; diesen Btn findet er.

test($oSession, '//*[@id="BtnView"]') ; diesen Btn findet er nicht.