please help in Custom Validation Client Side with Complex Type

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MVC

Getting Error as Conttype_ID ie obvious because of complex type my id is generating as listContactEntity_0_Conttype_ID which is not found

public class ContactEntity
  {
      public Int64? Cont_ID { get; set; }
      public Int64? UID { get; set; }
      [ValidateMobileno("Conttype_ID")]

      public string Contact_No { get; set; }
      public Int64? Conttype_ID { get; set; }
      public Int64? AddedBy { get; set; }
      public DateTime? AddedDate { get; set; }
      public Int64? UpdatedBy { get; set; }
      public DateTime? UpdatedDate { get; set; }
  }
  public class ContactTypeEntity
  {
      public Int64? Conttype_ID { get; set; }
      public string Type { get; set; }

  }
  public class ContactColletion
  {
      public UserEntity UserEntity { get; set; }
      public ContactEntity ContactEntity { get; set; }
      public ContactTypeEntity ContactTypeEntity { get; set; }
  }
public class ValidateMobileno : ValidationAttribute, IClientValidatable
  {

      public string[] propName { get; private set; }
      public ValidateMobileno(params string[] PropName)
      {
          this.propName = PropName;
      }
      protected override ValidationResult IsValid(object value, ValidationContext validationContext)
      {
          var Properties = this.propName.Select(validationContext.ObjectType.GetProperty);
          var values = Properties.Select(p => p.GetValue(validationContext.ObjectInstance, null)).OfType<Int64>();

          string Contact_No = Convert.ToString(value);

         // int a = values.Sum(x => x.Length);
          var data=values.Where(a=>a.Equals(2));
          if (data.Contains(2) && Contact_No == "")
          {
              return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName));
          }
          return null;

      }


      public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
      {
          //string errorMessage = this.FormatErrorMessage(metadata.DisplayName);
          string errorMessage = ErrorMessageString;

          // The value we set here are needed by the jQuery adapter
          ModelClientValidationRule dateGreaterThanRule = new ModelClientValidationRule();
          dateGreaterThanRule.ErrorMessage = errorMessage;
          dateGreaterThanRule.ValidationType = "checkcontid"; // This is the name the jQuery validator will use
          //"otherpropertyname" is the name of the jQuery parameter for the adapter, must be LOWERCASE!
          dateGreaterThanRule.ValidationParameters.Add("otherpropertyname", propName.FirstOrDefault());

          yield return dateGreaterThanRule;
      }
  }

<script>

    $.validator.addMethod("checkcontid", function (value, element, params) {

        if (value != "" && contid == "2") {
            return true;
        }

    });



    $.validator.unobtrusive.adapters.add("checkcontid", ["otherpropertyname"], function (options) {
        options.rules["checkcontid"] = "#" + options.params.otherpropertyname;
        options.messages["checkcontid"] = options.message;
    });





</script>

what change needed for complex type