Web Forms :: No HTTP Resource Was Found That Matches The Request URI

I try to add a new web api to my .net application and place it on Azure (where all my APIs are).

The new API is getNumbers:

public class GetNumbersController : ApiController
{
[HttpGet]
public List<string> GetNumbers(string planeType)
{
...
} }
 
For some reason i can't access it. when i type the url [server]/getNumbers i receive:

<Error>
<Message>
No HTTP resource was found that matches the request URI 'http://aeronexus-we.azurewebsites.net/GetTailNumbers'.
</Message>
</Error>
 
Of course that all my other APIs build the same and are accessible

I even can't see my new API under
[server]/help (where i can see all the others)

Locally I can access my new API

 The routes is:

config.Routes.MapHttpRoute(
name: "ActionApi",
routeTemplate: "{controller}/{action}/{id}",
defaults: new {id = RouteParameter.Optional})