setDefaults for radio buttons

Hi! I use HTML_QuickForm to sumbit a form. I have one row of radiobuttons.. They all work fine when I submit the form but when I want to edit the form, I want to show the chosen value for the radio buttons.. that I got from a database. I tried to use setDefaults but without any luck. :( This is the code I am using to create the radio buttons.. $types[] =& HTML_QuickForm::createElement('radio',null,null,'None','None'); $types[] =& HTML_QuickForm::createElement('radio',null,null,'Live Session','Live Session'); $types[] =& HTML_QuickForm::createElement('radio',null,null,'Selected Remix','Selected Remix'); $form->addGroup($types,"type_0","Type: "," "); For setting the value I use something like this: $this->form->setDefaults(array("type_0"=>"My default value")) ; Am I heading in the right direction? Thanks in advance! Ellen Sundh