I have a custom authentication provider that is working well but it doesn't support ReturnURL seems.

The Login class inherits from AuthenticationLoginBase and it has a piece of code like this:

                           UserLoginStatus loginStatus = validStatus == UserValidStatus.VALID ? UserLoginStatus.LOGIN_SUCCESS : UserLoginStatus.LOGIN_FAILURE;
                           if (loginStatus == UserLoginStatus.LOGIN_SUCCESS)
                           {
                               SetLoginDate(username);

                               // Raise UserAuthenticated Event
                               var eventArgs = new UserAuthenticatedEventArgs(userInfo, userInfo.Email, loginStatus, config.DNNAuthName)
                               {
                                   Authenticated = true,
                                   Message = "User authorized",
                                   RememberMe = false
                               };
                               OnUserAuthenticated(eventArgs);
                               if (Request.Params["RelayState"] != null)
                               {
                                   string redirectUrl = HttpUtility.UrlDecode(Request.Params["RelayState"]);
                                   Response.Redirect(redirectUrl);
                               }

Notice how it calls OnUserAuthenticated(...). The problem is that after this call it never comes back, so all code that goes after this line is not executed.

And so the RelayState parameter that contains the url the user should be redirected to is never done.

Is there a way to force DNN to know that it has to return to a specific url after the login is completed? if so how?