Okay I changed it now I get:
Warning: Missing argument 17 for siteCart_Definition::AddToCart(), called in /home/content/01/3827501/html/awlc/products-detail.php on line 254 and defined in /home/content/01/3827501/html/awlc/WA_eCart/siteCart_PHP.php on line 32
Warning: Cannot modify header information - headers already sent by (output started at /home/content/01/3827501/html/awlc/WA_eCart/siteCart_PHP.php:32) in /home/content/01/3827501/html/awlc/products-detail.php on line 270