mvc Localization validation error

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MVC

hello i wont to implement Localization so i use this package:
"Localization 1.0.7" (Link)

with a shurt youtube video
Link

i have documention here :https://github.com/yasinkuyu/Localization/tree/Haster/src/Attributes[^]

the problem
the "Html.Localize("key") or "Html.get("key") work fine.
but in the model i Fails to implemet "Required" message .

Xml resoure syntax:

<?xml version="1.0" encoding="UTF-8"?>
<lang>
	<item id="lng">TR</item>
	<item id="lngLNG">tr-TR</item>
	<item id="lngName">Türkçe</item>
	<item id="charset">UTF-8</item>
	<item id="dir">ltr</item>
	<item id="changelng">Dili Değiştir</item>
	<item id="changedlng">Dil değiştirildi</item>
  
	<item id="displayName">Ad Soyad</item>
	<item id="stringLength">{0} için girilen değer {2} karakterden kısa olamaz.</item>
	<item id="required">Bu alan gerekli</item>
	<item id="description">Açıklama</item>

	<item id="homepage">Anasayfa</item>

  


  <item id="Login_Login">Login(tr)</item>
  <item id="Login_EmailInputPlaceHolder">Email Address 2(tr)</item>
  <item id="Login_PasswordInputPlaceHolder">Password..(tr)</item>
  <item id="Login_RememberMe">Remember My(tr)</item>
  <item id="Login_BtnLogin">Login(tr)</item>
  <item id="Login_BtnRegister">Register(tr)</item>
  <item id="Login_BtnForgotPass">Forgot Password ?(tr)</item>
  
</lang>

i wont custom validation error message for each language so for now i just show the
"reqired" in the custom language

my model is :

public class LoginModel
    {
      
        [RequiredLocalized]
        [DisplayLocalize("login_login")]
        public string Email { get; set; }

        [Required]
        [DataType(DataType.Password)]
        public string Password { get; set; }

        [System.Web.Mvc.HiddenInput(DisplayValue = false)]
        public string ReturnUrl { get; set; }

        public bool RememberMe { get; set; }
    }

and i have function method to change the language :

public class LocalesController : Controller
   {
       //when chage language this controller set the language in the cookie "CacheLang"
       public ActionResult Index(string lang = "en_US")
       {
           Response.Cookies["CacheLang"].Value = lang;

           if (Request.UrlReferrer != null)
               Response.Redirect(Request.UrlReferrer.ToString());

           var message = Localization.Get("changedlng");

           return Content(message);
       }

   }

* please notice i can Switch languages easily