if you a paid zone you could work around it with snippets (although they're alpha/not recommended fo
if you a paid zone you could work around it with snippets (although they're alpha/not recommended for production yet), either doing the logic in a snippet directly or fetching a worker on a subdomain, and then they're powered by ruleset engine so you could have it check only if any query params are set (len > 0), or for a specific one, etc