change the link of the logo in WHMCS using a hook

[HostBN]

<?php

add_hook('ClientAreaHeaderOutput', 1, function($vars) {
    // Get the current logo URL
    $logoUrl = $vars['logoUrl'];

    // Update the link of the logo
    $logoLink = '<a href="https://example.com"><img src="' . $logoUrl . '"></a>';

    // Update the header output with the new logo link
    $vars['headerOutput'] = str_replace($vars['logo'], $logoLink, $vars['headerOutput']);
});

the cod not change my logo url or whmcs . Im planning to use different url in logo for clients and guest but im unable to change logo url from hook. I am not interested to modify the Template file for whmcs smooth update in future.