Form Helper Label

[eluser]Perkin5[/eluser]
I want to give a label the class of 'required' so I can do:

Code:

$data = array(
'class'=>'required'
);
echo form_label('First Name','',$data);

but for a single attribute, it doesn't seem worth using an array. So I tried:

Code:

echo form_label('First Name','','class="required"');

but it doesn't work. A simlar approach works with other form helper elements so why doesn't this work? Or how can it be made to work?