Request Money is not working

The request money is not working. I tried this:

```
> var accounts = await client.Transactions.RequestMoneyAsync(accountId, new RequestMoney
> {
> To = email,
> Type = "request",
> Amount = amount,
> Currency = coinType,
> Description = description
> });
```
```
> var result = coinBase.RequestPayment("myaccountid", "test@gmail.com", 0.01, "BTC",null).Result;
```

It throwing an exception:

>
Unhandled Exception: System.AggregateException: One or more errors occurred. ---> Flurl.Http.FlurlHttpException: Call failed with status code 400 (Bad Request): POST https://api.coinbase.com/v2/accounts/******/transactions
at Flurl.Http.FlurlRequest.d__23.MoveNext()