RadioButton not checked proper.

[eluser]Rocky Mehta[/eluser]
Still not Working.
To this this code i checked my checkbox(fetching the data from database)

Code:

if($query['bring']=='1')  // This code working.
  {
    $data['bring']['checked'] = TRUE;
  }
  else
  {
   $data['bring']['checked'] = FALSE;
  }

But How can i checked my radiobutton(fetch data from database)

Code:

if($query['charges']=='free')       //This code not checked my radio button.
{
   $data['charges']['checked'] = TRUE;
   echo set_radio('charges', 'free', TRUE);
}
else
{
   ....
}