I have it installed now but when i try to define language and currency its's not working can anyone help me out

Here is the define for the language and currency in the config file

define('LANGUAGE_CURRENCY', 'SEK');
define('LANGUAGE_DEFAULT_SELECTOR','se'); //Language Selector

define('LANGUAGE_CURRENCY', 'USD');
define('LANGUAGE_DEFAULT_SELECTOR','en'); //Language Selector

is that right or?