Checkbox values in prestashop

I'm working with prestashop and try to get value from a form with checkbox using a HelperForm

SO what I had is :

$fields_form[0]['form']= [
        'legend'=> [
            'title'=> $this->l('Indexation')
        ] ,
        'input'=>[
            [
                'type'=>'text',
                'label'=> $this->l('Base(s) à indexer'),
                'name'=>'options',
                'size'=>20,
                'required'=>true
            ]
        ],
        'submit'=>[
            'title' => $this->l('Save'),
            'class' => 'btn btn-default pull-right'
        ]
    ];

and then

$helper = new HelperForm();
[...]
$helper->toolbar_btn = array(
        'save' =>
            array(
                'desc' => $this->l('Save'),
                'href' => AdminController::$currentIndex.'&configure='.$this->name.'&save'.$this->name.
                    '&token='.Tools::getAdminTokenLite('AdminModules'),
            ),
        'back' => array(
            'href' => AdminController::$currentIndex.'&token='.Tools::getAdminTokenLite('AdminModules'),
            'desc' => $this->l('Back to list')
        )
    );

    // Load current value
    $helper->fields_value['options'] = Configuration::get('options');

    return $helper->generateForm($fields_form);

and in my getContent I had :

$my_module_name = strval(Tools::getValue('options'));
return $my_module_name;

So until there I had no problem. I write 'test' in the text input and then 'test' is returned but I don't want a text input I want a checkbox input so I changed my form for :

 $fields_form[0]['form']= [
        'legend'=> [
            'title'=> $this->l('Indexation')
        ] ,
        'input'=>[
            [
                'type'=>'checkbox',
                'label'=> $this->l('Base(s) à indexer'),
                'name'=>'options',
                'required'=>true,
                'values'=>[
                    'query'=>$options,
                    'id'=>'id',
                    'name'=>'name'
                ]
            ]
        ],
        'submit'=>[
            'title' => $this->l('Save'),
            'class' => 'btn btn-default pull-right'
        ]
    ];

and in my getContent(): return (Tools::getValue('options')); But with that, nothing is displayed.