Populate field with form description

Hey -

I need to pre-populate a hidden field in a form with the current forms description. I have multiple forms, so I don't want to have to add in ID's.

I was hoping something as simple as this would work:

add_filter('gform_field_value_param_name', 'custom_function');
function custom_function($value){
	$desc = $form['description'];
    return $desc;
}

But, it does not. Any thoughts on how to do this. I am going to be pulling entries to the front end of the site and listing what form they have submitted. so this information is necessary.

Thanks.

I would rather do this dynamically with the hooks so my client doesn't have to manually update one extra field. They will be chaining the description only in the forms based on the event they are having.

Hooking in would be a lot smoother for them to have one thing to do.