Set default city

Hi! Great plugin!
Is it possible to set default city from the list for selected country?
Now “Select an option” is displayed by default.
I try to use this function but it make no effect to me.
add_filter( ‘woocommerce_checkout_fields’, ‘set_checkout_field_input_value_default’ );

function set_checkout_field_input_value_default($fields) {
$fields[‘billing’][‘billing_city’][‘default’] = ‘Default City’;
return $fields;
}