Sending Variable In Url

We are looking to load pre-configured products using links on our CS Cart 4.0.3 installation and cannot seem to figure out how.



Ie: we have a pattern option, and want the customer to be able to select the pattern on the screen before reaching the product, and pass that option through the URL, like so: http://www.url.com/my-product-here.html?pattern=Blue



Is this possible, or will we need to find another way to do this?