Variables on CreatePaymentRequestParams

[ashansen]

Hi.
I get a BadRequest when trying to use the Variables on CreatePaymentRequestParams
It might be a serialization issue caused by a previous change from e.g. NewtonSoft to System.Text.Json.

For example:

createPaymentParams.variables = [
    new { name = "Test Name"},
    new { street = "Test Street"}
];

This serializes to:
"variables":[{"name":"Test Name"},{"street":"Test Street"}]

And that returns BadRequest from Quickpay API:
{"message":"Validation error","errors":{"variables":["is invalid"]},"error_code":null}

If I change variables to be object and parse in Dictionary<string, object> and do the similar

createPaymentParams.variables = new Dictionary<string, object>()
    {
            { "name","Test Name"},
            { "street","Test Street"}
    }; 

I get serialized to:
"variables":{"name":"Test Name","street":"Test Street"}

And this request works for Quickpay, and I can see the variables in the management view.