Create new product in paypal for subscription with REST API

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PayPal

REST

API

Hello, I'm trying to create new product, plan and subscription using paypal REST API. I'm using c# code in .net. Everything works find but the response is with status: 200 and it means OK but in the documentation I see that I have to receive a response with status: 201 CREATED. Also in my response there is not info about the created product. I'm not sure if I'm missing something because if the product is created I have to receive back product's information. This is the code I use:

public void CreateProduct()
{
    try
    {
        string URL = "https://api.sandbox.paypal.com/v1/catalogs/products";
        string urlParameters = "?name=testName";

        // using System.Net;
        ServicePointManager.Expect100Continue = true;
        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
        // Use SecurityProtocolType.Ssl3 if needed for compatibility reasons

        HttpClient client = new HttpClient();
        client.BaseAddress = new Uri(URL);

        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "Access-Token-Is-Here-I-Remove-It-For-Security-Purpose");
        client.DefaultRequestHeaders.Add("PayPal-Request-Id", "ERRCAT001"); 
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        // List data response.
        HttpResponseMessage response = client.GetAsync(urlParameters).Result;  // Blocking call! Program will wait here until a response is received or a timeout occurs.
        if (response.IsSuccessStatusCode)
        {
            // Parse the response body.
            //var dataObjects = response.Content.ReadAsAsync<IEnumerable<DataObject>>().Result;  //Make sure to add a reference to System.Net.Http.Formatting.dll
            //foreach (var d in dataObjects)
            //{
            //    Console.WriteLine("{0}", d.Name);
            //}
        }
        else
        {
            Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
        }

        //Make any other calls using HttpClient here.

        //Dispose once all HttpClient calls are complete. This is not necessary if the containing object will be disposed of; for example in this case the HttpClient instance will be disposed automatically when the application terminates so the following call is superfluous.
        client.Dispose();
    }
    catch (Exception err)
    {
        string error = err.Message;
    }
}

What I have tried:

I was looing the documentation from paypal but there is not exact code for this.