Using Local Variable To Pass Login Name To CREATE LOGIN Script

Dear all;

I'm trying to use a local variable @NEW_LOGIN_CODE to pass LOGIN NAME to CREATE LOGIN script as follows:

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declare

@NEW_LOGIN_CODE varchar(255),
@NEW_LOGIN_PASSWORD varchar(255);
begin

SET @NEW_LOGIN_CODE = 'any_login';
SET @NEW_LOGIN_PASSWORD = 'AnyPassword';

CREATE LOGIN @NEW_LOGIN_CODE WITH PASSWORD @NEW_LOGIN_PASSWORD;
end
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the script will not work unliss I provided a hard coded login code and password as follows:

CREATE LOGIN ANY_LOGIN WITH PASSWORD 'AnyPassword'

what should I do to make the CREATE LOGIN script accept local variables as parameters?

Thanks