Thêm VND vào Gravityforms

add_filter( 'gform_currencies', 'add_vnd_currency' );
function add_vnd_currency( $currencies ) {
    $currencies['VND'] = array(
        'name'               => __( 'Vietnamese Dong', 'gravityforms' ),
        'symbol_left'        => '',
        'symbol_right'       => 'VND',
        'symbol_padding'     => ' ',
        'thousand_separator' => ',',
        'decimal_separator'  => '.',
        'decimals'           => 0
    );
 
    return $currencies;
}