update product when in select the one category

-- url of the page with the problem -- : localhost
-- HikaShop version -- : 3.3.0
-- HikaMarket version -- : 1.7.1
-- Joomla version -- : 3.8.5
-- PHP version -- : 7.0.0
-- Browser(s) name and version -- : chrome

i create some custom field for show in product , and the product has different types . i want display some field in one type of product and another field in other type of product . for this problem I linked each field to a product category from a collection. but when i change the category in new product ,field of product not changing and when i save this product i saw my costum field . i want updateing product when i change category. what should i do?