Iconic WDS - Modify the max dates setting for a specific product.

functions.php

<?php
/**
 * Iconic WDS - Modify the max dates setting for a specific product.
 */
iconic_wds_modify_wds_max_dates_setting();
add_action('wp_loaded', 'iconic_wds_modify_wds_max_dates_setting', 11);

function iconic_wds_modify_wds_max_dates_setting() {
	global $iconic_wds;
	if ( ! isset( $iconic_wds ) ) {
		return;
	}

  // Todo - modify these values with yours.
	$disable_product_id = 10;
	$max_days = 5;
    // Check if WooCommerce is active and cart is available
    if (!function_exists('WC') || is_null(WC()->cart)) {
        return;
    }
    
    // Check if product ID 10 is in cart
    $has_product = false;
    foreach (WC()->cart->get_cart() as $cart_item) {
        $product    = $cart_item['data'];
		$product_id = $product->get_parent_id() ? $product->get_parent_id() : $product->get_id();
        
        // Check both product_id and variation_id (for variable products)
        if ($product_id == $disable_product_id) {
            $has_product = true;
            break;
        }
    }
    
    // Update the setting if product is found
    if ($has_product && isset($iconic_wds->settings)) {
        $iconic_wds->settings['datesettings_datesettings_maximum'] = $max_days;
    }
}