[SOLVED] how Re-populating the check box value in form?

[eluser]suba[/eluser]
Hi

In my form , I have one group of check box, text box, drop down list.

When I click submit button , I want to re-populate value in my selected check box.

how is it?

Text box & drop down list has worked properly.

Example:

Code:

<?
$att=array('name'=>'name','value'=>set_value('name'))
echo form_input($att);
?>

but in check box , I don't know how to re-populate the selected check box which is checked.

Thanks