Cache Rule based on query string param

I have a parameter of “h” that I commonly use to include a timestamp, which I historically used to trick the user’s browser into bypassing cache.

I’d like to use this in a Cache Rule to bypass cache, too. But I can’t just use contains “h=”, because that would match, for example, which=.

Is there a better way other than having two conditions: starts_with and contains?

(starts_with(http.request.uri.query, “h=”)) or
(http.request.uri.query contains “&h=”)