Add CNY currency to Gravity Form

functions.php

<?php
add_filter( 'gform_currencies', 'idea_mcg_add_cny_currency' );
function idea_mcg_add_cny_currency( $currencies ) {
	$currencies['CNY'] = array(
		'name'               => 'Chinese Yuan',
		'code'               => 'CNY',
		'symbol_left'        => 'CNY ',
		'symbol_right'       => '',
		'symbol_padding'     => ' ',
		'thousand_separator' => ',',
		'decimal_separator'  => '.',
		'decimals'           => 2,
	);
	return $currencies;
}