let merchantConfig = PGMerchantConfiguration.default()
        merchantConfig?.checksumGenerationURL = "http://api.myserver.io/generate_checksum" // Not the actual url
        merchantConfig?.checksumValidationURL = "http://api.myserver.io/verify_checksum" // Not the actual url

        var orderParams: [String: String] = [:]
        // Merchant config
        orderParams["MID"] = "SreeTr69744841387208"
        orderParams["CHANNEL_ID"] = "WAP"
        orderParams["INDUSTRY_TYPE_ID"] = "Retail"
        orderParams["WEBSITE"] = "APP_STAGING"
        // Order config
        orderParams["TXN_AMOUNT"] = "1.00"
        orderParams["ORDER_ID"] = "1499926963"
        orderParams["CALLBACK_URL"] = "https://pguat.paytm.com/paytmchecksum/paytmCallback.jsp"
        orderParams["REQUEST_TYPE"] = "DEFAULT"
        orderParams["CHECKSUMHASH"] = "BLkX0WUJ2TCnb54xz0IhLEZU9gYi2N21XNkinbrRQXv5s+LLjF+UiOYkpB1ccrR6YbhQtk71TRPd5Pvz1KeUZKraaCCr6ovzmYSxEV0d8GQ=" // From Server
        orderParams["CUST_ID"] = "1234567890"
        let order: PGOrder = PGOrder(params: orderParams)

        PGServerEnvironment.selectServerDialog(self.view) { serverType in
            let transactionController = PGTransactionViewController.init(transactionFor: order)
            transactionController?.serverType = serverType
            transactionController?.merchant = merchantConfig
            transactionController?.delegate = self
            transactionController?.loggingEnabled = true

            if let vc = transactionController {
                self.present(vc, animated: true, completion: nil)
            } else {
                log.error("vc could not be initialised")
            }
        }