// The `amount_msat` param is optional and should only passed if the bolt11 doesn't specify an amount.
// The amount_msat is required in case an amount is not specified in the bolt11 invoice'.
let optional_amount_msat: Option<u64> = None;
let optional_label = Some("<label>".to_string());

let req = SendPaymentRequest {
    bolt11: "...".into(),
    amount_msat: optional_amount_msat,
    label: optional_label,
};
let response = sdk.send_payment(req).await?;

// The `amountMsat` param is optional and should only passed if the bolt11 doesn't specify an amount.
// The amountMsat is required in case an amount is not specified in the bolt11 invoice'.
let optionalAmountMsat: UInt64 = 3_000_000
let optionalLabel = "<label>"
let req = SendPaymentRequest(bolt11: "...", amountMsat: optionalAmountMsat, label: optionalLabel)
let response = try? sdk.sendPayment(req: req)

val bolt11 = "..."
try {
    // The `amountMsat` param is optional and should only passed if the bolt11 doesn't specify an amount.
    // The amountMsat is required in case an amount is not specified in the bolt11 invoice'.
    val optionalAmountMsat = 3_000_000.toULong()
    val optionalLabel = "<label>"
    val req = SendPaymentRequest(bolt11, optionalAmountMsat, optionalLabel)
    val response = sdk.sendPayment(req)
} catch (e: Exception) {
    // handle error
}

try {
  const bolt11 = 'bolt11 invoice'
  // The `amountMsat` param is optional and should only passed if the bolt11 doesn't specify an amount.
  // The amountMsat is required in case an amount is not specified in the bolt11 invoice'.
  const optionalAmountMsat = 3000000
  const optionalLabel = '<label>'
  const response = await sendPayment({
    bolt11,
    amountMsat: optionalAmountMsat,
    label: optionalLabel
  })
} catch (err) {
  console.error(err)
}

// The `amountMsat` param is optional and should only passed if the bolt11 doesn't specify an amount.
// The amountMsat is required in case an amount is not specified in the bolt11 invoice'.
int optionalAmountMsat = 3000000;
String optionalLabel = "<label>";
SendPaymentRequest req = SendPaymentRequest(bolt11: bolt11, amountMsat: optionalAmountMsat, label: optionalLabel);
SendPaymentResponse resp = await breezSDK.sendPayment(req: req);

bolt11 = "..."
try:
    # The `amount_msat` param is optional and should only passed if the bolt11 doesn't specify an amount.
    # The amount_msat is required in case an amount is not specified in the bolt11 invoice'.
    optional_amount_msat = 3000000
    optional_label = "<label>"
    req = breez_sdk.SendPaymentRequest(bolt11=bolt11, amount_msat=optional_amount_msat, label=optional_label)
    sdk_services.send_payment(req=req)
except Exception as error:
    print(error)
    raise        

bolt11 := "bolt11 invoice"
// The `amountMsat` param is optional and should only passed if the bolt11 doesn't specify an amount.
// The amountMsat is required in case an amount is not specified in the bolt11 invoice'.
optionalAmountMsat := uint64(3_000_000)
optionalLabel := "<label>"
sendPaymentRequest := breez_sdk.SendPaymentRequest{
    Bolt11:     bolt11,
    AmountMsat: &optionalAmountMsat,
    Label:      &optionalLabel,
}
if response, err := sdk.SendPayment(sendPaymentRequest); err == nil {
    log.Printf("%#v", response)
}

var bolt11 = "...";
ulong optionalAmountMsat = 3_000_000;
var optionalLabel = "<label>";

try
{
    // The `amountMsat` param is optional and should only passed if the
    // bolt11 doesn't specify an amount.
    // The amountMsat is required in case an amount is not specified in
    // the bolt11 invoice.
    var response = sdk.SendPayment(
        new SendPaymentRequest(bolt11, optionalAmountMsat, optionalLabel));
}
catch (Exception)
{
    // Handle error
}