Search Field Code

My WP page is connected to an ecommerce site and I have a small piece of code to append to the search query code. I need to add to all searches the following:
?Staging=True

See below for my current search code. Currently, it is not acknowledging the “?Staging=True”. (I tried substituting & and / for the “?”, but no success. I use this on all my links and it works fine. Just having this issue in Search queries. Current code:

<form action=”https://store.xxx.com/categories.aspx?Staging=True&#8221; method=”get” id=”searchForm”>

<script src=”https://www.nexternal.com/net/StoreFront/JavaScript/AutoComplete.js?cn=tedu&searchType=keyword?Staging=True”></script&gt;

Thanks!!