[Zope] can one pass values through the 'action' property?

I'm trying to do this: <form action="get_row?row=3" method="POST"> ... <input type="submit" name="submit" value="submit"> .... </form> However, "row" does not show up in the REQUEST namespace, even though a similar syntax works in a HREF tag. Can this be done? I know I can add a hidden input tag, but it's a little messier. Thanks, Albert