Swiss frank Custom Currency

<?php
/*
This function will add South African Rand to the list of available currencies for your events.
Edit accordingly for other currencies.

For information on how to paste/implement this snippet, see here - http://wp-events-plugin.com/tutorials/how-to-safely-add-php-code-to-wordpress/
*/
function my_em_add_currencies_CHF($currencies){
    $currencies->names['CHF'] = 'CHF - Swiss franc'; //textual representation of the currency
    $currencies->symbols['CHF'] = 'CHF'; //If the symbol requires an entity, like for € it's &euro;
    $currencies->true_symbols['CHF'] = 'CHF'; //The actual symbol used, e.g. for Euros it's €
    return $currencies;
}
add_filter('em_get_currencies','my_em_add_currencies_CHF');