Yes - in my opinion a better solution will be to define description_callback for your recordset_name, and don't use columns at all.
Utils_RecordBrowserCommon::set_description_callback('recordset_name', array('Custom_Module_RS_or_any_other_class', 'method_name'));
class Custom_Module_RS_or_any_other_class {
...
public static function method_name($record, $nolink) {
// build your label for record
$label = 'foo bar' . $record['field'];
return $label;
}
...
}
Then change your definition to:
'param' => 'recordset_name',
Regards,
Adam