[QuickForm] rename fields inside group

Hi, I have set up a group to have a text field and a button (trying to use a popup calendar, actually). The popupcalendar script I am using requires the name of the field to be passed in. But the field name is of the form 'groupname[fieldname]' - I need it to be of the form 'fieldname' only! The source for QuickForm has this bit in the comment for addGroup:

     * @param string $useName (optional)specify whether the group name should be
     *	used in the form element name ex: group[element]

Anyone know if this works, and can provide an example? Thanks, Geoff -- Geoff Hopson Objectology Ltd. http://www.objectology.co.uk/