Coupon Code Label Change

Coupon Code Label Change within Checkout page

add_filter( 'gettext', 'woocommerce_rename_coupon_message_on_checkout' ,10,3);
// rename the coupon field on the checkout page
function woocommerce_rename_coupon_message_on_checkout( $translated_text, $text, $text_domain ) {
	// bail if not modifying frontend woocommerce text
	if ( is_admin() || 'woocommerce' !== $text_domain ) {
		return $translated_text;

	} elseif ( 'Apply coupon' === $text ) {
		$translated_text = 'Special Code';
	}
	return $translated_text;
}