update() and save() methods result in "no matching method/function" in railo
===

I'm trying to run a very quick update query to record that a user's email address is confirmed (setting the confirmed [bit] column in my users table to 1 after they click a link sent via email). Here's the action that should do it:

        <cffunction name="confirmEmail">
        <cfscript>
          user = model("user").findOne(where="id=#params.userid# AND uuid='#params.uuid#'", returnAs="query");
          if(user.recordCount) {
            pageTitle = "E-mail Confirmation Success";
            user.update(confirmed=1);
          } else {
            redirectTo(route="authenticationDenied", alert="Something was wrong with your confirmation string. Please contact site administrators.");
          }
        </cfscript>
      </cffunction>

But when I submit the appropriate URL (I've dumped and can see the model call finds one valid record), I get the following error in Railo 3.3.x:

> No matching Method/Function [update] for call with named arguments found

...highlighting the **user.update(confirmed=1);** line in my code. So what am I doing wrong? Previously I have always used save/update(params.user) or thereabouts for these queries, but that seems like overkill here; I just want to pass a 1-bit update.