No need to set to invisible an assesment

main/gradebook/gradebook_edit_cat.php

@@ -35,12 +35,12 @@ if ($form->validate()) {
 	$cat->set_parent_id($values['hid_parent_id']);
 	$cat->set_weight($values['weight']);
 	$cat->set_certificate_min_score($values['certif_min_score']);
-	if (empty ($values['visible'])) {
+	/*if (empty ($values['visible'])) {
 		$visible = 0;
 	} else {
 		$visible = 1;
 	}
-	$cat->set_visible($visible);
+	$cat->set_visible($visible);*/
 	$cat->save();
 	header('Location: '.Security::remove_XSS($_SESSION['gradebook_dest']).'?editcat=&selectcat=' . $cat->get_parent_id());
 	exit;

main/gradebook/lib/fe/catform.class.php

@@ -135,7 +135,7 @@ class CatForm extends FormValidator {
    		$this->addElement('hidden','hid_user_id');
    		$this->addElement('hidden','hid_parent_id');
 		$this->addElement('textarea', 'description', get_lang('Description'),array('rows'=>'3','cols' => '34'));
-		$this->addElement('checkbox', 'visible',get_lang('Visible'));
+	//	$this->addElement('checkbox', 'visible',get_lang('Visible'));
 		$this->addElement('style_submit_button', null, get_lang('EditCategory'), 'class="save"');
 		$this->addRule('weight',get_lang('OnlyNumbers'),'numeric');
 		$this->addRule('weight',get_lang('NoDecimals'),'nopunctuation');