Android Question Google play billing v6

Sub btnRemoveAds_Click
    'make sure that the store service is connected
    Wait For (billing.ConnectIfNeeded) Billing_Connected (Result As BillingResult)
    If Result.IsSuccess Then
        'get the sku details
        Dim sf As Object = billing.QuerySkuDetails("inapp", Array(ADS_SDK_ID))
        Wait For (sf) Billing_SkuQueryCompleted (Result As BillingResult, SkuDetails As List)
        'If Result.IsSuccess And SkuDetails.Size = 1 Then
        '    Result = billing.LaunchBillingFlow(SkuDetails.Get(0))
        '    If Result.IsSuccess Then Return
        'End If
        If Result.IsSuccess Then
            If SkuDetails.Size > 0 Then
                Result = billing.LaunchBillingFlow(SkuDetails.Get(0))
                If Result.IsSuccess Then Return
            Else
                ToastMessageShow("Error SKU not found", True)
                Return
            End If
        End If
    End If
    ToastMessageShow("Error starting billing process", True)
End Sub