Thanks, Scot.

In somewhat related problem, I can't seem to submit a form that should append a name/value pair if the current GET query string already contains the named tag with different values. Within the same page, I can submit a form that can result a query string that contains multiple occurrence of tags with different values using <setcheckbox> and <clickbutton>. (the application I am testing displays multiple pages of listing and the checkbox field values with the same name are appended to the url for comparison form submission)

I have been using storeregex and storexpath whenever I run into problems like these, but my test scripts are getting pretty ugly. I don't recall such restriction on the specification of query string of uri.