open external products in new tab

Hey

im updating outdated template files on my site and the last one is;

Divi-child/woocommerce/single-product/add-to-cart/external.php version 2.1.0 is out of date. The core version is 3.4.0,

i am using this to open the links in a new tab by adding the target=”_blank” here in my current outdated file

<p class=”cart”>
” rel=”nofollow” class=”single_add_to_cart_button button alt” target=”_blank”><?php echo esc_html( $button_text ); ?>
</p>

BUT, when i update with the latest version of this file and try and add the target+”_blank” it is not working. any ideas why?

this is the full code for the updated file;

<?php
/**
* External product add to cart
*
* This template can be overridden by copying it to yourtheme/woocommerce/single-product/add-to-cart/external.php.
*
* HOWEVER, on occasion WooCommerce will need to update template files and you
* (the theme developer) will need to copy the new files to your theme to
* maintain compatibility. We try to do this as little as possible, but it does
* happen. When this occurs the version of the template file will be bumped and
* the readme will list any important changes.
*
* @see https://docs.woocommerce.com/document/template-structure/
* @package WooCommerce/Templates
* @version 3.4.0
*/

defined( ‘ABSPATH’ ) || exit;

do_action( ‘woocommerce_before_add_to_cart_form’ ); ?>

<form class=”cart” action=”<?php echo esc_url( $product_url ); ?>” method=”get”>
<?php do_action( ‘woocommerce_before_add_to_cart_button’ ); ?>

<button type=”submit” class=”single_add_to_cart_button button alt” target=”_blank”><?php echo esc_html( $button_text ); ?></button>

<?php wc_query_string_form_fields( $product_url ); ?>

<?php do_action( ‘woocommerce_after_add_to_cart_button’ ); ?>
</form>

<?php do_action( ‘woocommerce_after_add_to_cart_form’ ); ?>

thanks

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