SQL use Unicode N in a Stored Procedure with variable

Question

I have the following Stored Procedure, Im looking for the correct syntax so I can play the Comments Value in the Comments column with N in front end the value for Unicode I need save Russian Characters Values

So at the moment the comments value is being passed as such

@comments

I want to do

N@comments but not working

ALTER PROCEDURE [dbo].[spInsertContactUs]
(
@title VARCHAR(20) = default,
@forename VARCHAR(100) = default,
@surname VARCHAR(100) = default,
@gender VARCHAR(50) = default,
@address1 VARCHAR(100) = default,
@address2 VARCHAR(100) = default,
@city VARCHAR(50) = default,
@county VARCHAR(50) = default,
@country INT = default,
@zipcode VARCHAR(50) = default,
@email VARCHAR(200) = default,
@comments NVARCHAR(MAX) = default,
@mailinglist BIT = default,
@address3 VARCHAR(100) = default,
@dateOfBirth datetime = default
)
AS
SET NOCOUNT ON

INSERT INTO tblContactUs (
dateAdded,
title,
forename,
surname,
gender,
address1,
address2,
city,
county,
country,
zipcode,
email,
comments,
mailinglist,
address3,
dateOfBirth)
VALUES (
getdate(),
@title,
@forename,
@surname,
@gender,
@address1,
@address2,
@city,
@county,
@country,
@zipcode,
@email,
@comments,
@mailinglist,
@address3,
@dateOfBirth
)

SET NOCOUNT OFF
RETURN

;

Solution

Use Nvarchar data type in table's fields and stored procs parameters.

ADDED

See this link, maybe this will help you.