/**
     * Update description.
     *
     * Render the corresponding description for the condition key.
     *
     * @since 1.0.0
     */
    public function update_condition_description()
    {
        check_ajax_referer('wpc-ajax-nonce', 'nonce');
        $condition = sanitize_text_field($_POST['condition']);
        $wp_condition = new WCASV_Condition(null, null, $condition);
        if ($desc = $wp_condition->get_description()) {
            ?>
<span class='wpc-description wpc-no-description <?php 
            echo $desc;
            ?>
-description'><?php 
            die;
        }
        ?>
<span class='wpc-description <?php 
        echo $wp_condition->condition;
        ?>
-description'>
		<img class='help_tip' src='<?php 
        echo WC()->plugin_url();
        ?>
/assets/images/help.png' height='24' width='24' data-tip="<?php 
        echo esc_html($wp_condition->get_description());
        ?>
" />
		</span><?php 
        die;
    }