Send Message to different phone number if a field on checkout page is selected?

Hi there. Thanks for the simple but great plugin!

I have a function set to add an additional mail recipient to woocommerce_email_headers allowing new orders notifications to be sent to the additional email address. I’ve made it to work in such a way that if the user selects a specific city on checkout page, then the function is triggered.

I’d like to use the same logic so that the whatsapp phone number is changed when the user picks a specific city. Could anyone help to inspect the plugin’s functions and adjust the function bellow to work with it?

Thanks in advance.

<?php
function my_function_add_recipient( $recipient, $order ) {
global $woocommerce;

$additional_recipient = '[email protected]';

$customer_city = array('New York'); // an array of values to be matched - this will check for the $field['billing_city'] within the $order variable
if ( in_array( $order->billing_city, $customer_city ) ) {
// Add additional email to the recipient list
$recipient = $recipient . ', ' . $additional_recipient;
}
return $recipient;
}
add_filter( 'woocommerce_email_recipient_new_order', 'my_function_add_recipient', 10, 2 );

// Ensures mail header is properly set so emails are not sent to spam folder
add_filter( 'woocommerce_email_headers', 'add_bcc_to_wc_admin_new_order', 10, 3 );
function add_bcc_to_wc_admin_new_order( $headers = '', $id = '', $wc_email = array() ) {
    if ( $id == 'new_order' ) {
        $headers .= "Bcc: [email protected]\r\n";
    }
    return $headers;
}
?>

https://www.ads-software.com/plugins/whatsapp-woocommerce-integration/