Add ARS in Jigoshop

functions.php

<?php

function new_jigoshop_add_my_currency( $currencies ) {
     $currencies['ARS'] = ' Argentine peso (&#36;)';
     asort( $currencies );

     return $currencies;
}

add_filter( 'jigoshop_currencies', 'new_jigoshop_add_my_currency', 1, 1 );

function new_jigoshop_add_my_currency_symbol( $currency_symbol, $currency ) {
    if ( $currency == 'ARS' ) {
        $currency_symbol = '&#36;';
    }

    return $currency_symbol;
}

add_filter( 'jigoshop_currency_symbol', 'new_jigoshop_add_my_currency_symbol', 1, 2 );