Hi I try gen button/link feature in Shop for a product with id 16 But this product has 2 plans billing id 25, 26 I have try with <a href="#" onclick="cart.addBasketExternalPlan(this,16, 25); return false;" >add to Cart</a> <a href="#" onclick="cart.addBasketExternalPlan(this,16, 26); return false;" > add to Cart</a> It only work with the first time. I can not add 2 products. This problem in the shop layout, when product has multiple plans billing, you only can add one. If you want to add other plan, you need to remove current plan in basket. It is inconvenience. We can let user delete plan in basket if he do not buy it.