form set_value

[eluser]jairoh_[/eluser]
i have a form that changes a title's value, but before changing changing it's value, it will have its default value shown. But when the validation of the value is invalid, i want the invalid value will still be there instead of the default value. anyone has an idea? tnx

Code:

<?php echo form_input( 'title', $default_value ); ?>