How to pass string parameters of trade offers to new JCCatalogItem?

Question

1C-Bitrix

I want to show the number of stars of hardness of each trade offer, I made this field numeric, how to change it through js in the general characteristics of the product when changing the trade offer

var <?=$obName?> = new JCCatalogItem(<?=CUtil::PhpToJSObject($jsParams, false, true)?>);