When I buy Upgrade item it will go to cart like two-three products or more...

Hi,

In the HikaShop configuration page, you want to activate the "group options with product" setting:
www.hikashop.com/support/documentation/5...ig.html#main_product

Hi,

There is no mechanism for this in HikaShop.
You have 3 solutions for this:

- if you want to use "options" like you're already using, then the only solution is to edit the product / options view via the menu Display>Views and add custom javascript code to it to handle this mechanism:
www.hikashop.com/forum/content-creation/...n-option-choice.html

- Instead of using "options", you could switch to creating custom fields of the table "item" via the menu Display>Custom fields:
www.hikashop.com/support/documentation/4...shop-field-form.html
In the settings of custom fields, you have the setting "display limited to" which allows you to display / hide fields based on other fields.

- Instead of using "options", you could use characteristics:
www.hikashop.com/support/support/documen...html#characteristics
Characteristics can be nice in some cases, but they have many drawbacks too (you can't have many of them, you need to configure all the potential combinations, etc).