ProxyPass iRule and Query Strings

So I am trying to implement this iRule and it does not seem to work with query strings or even regex after the initial string.

I have a regex string for / with a value of =/search(.*)=websitetogoto.com/search$1 but it does not work/searchw=test and it should technically grab the "w=test" value and pass it along for processing, but that is not happening. All that is happening is i get a redirect on the whole URL to search with a trailing slash, so url.com/search/

I see other comments on the iRule asking for query string support, but no answers yet.