Symfony 3 embedded forms labels not numbers

Question

Is it possible to change those numbers (names of embedded forms) to some other labels (they depend on StatisticField's name property) without using javascript?

StatisticType has StatisticFieldTypes:

$builder->add('statisticFields', CollectionType::class, array(
            'entry_type' => StatisticFieldType::class,
            'by_reference' => true,
        ));

StatisticFieldType:

 $builder->add('dateSince', DateTimeType::class, [
                    'widget' => 'single_text',
                    'label' => 'date.since',
                    'required' => false,

                ])
                    ->add('dateTo', DateTimeType::class, [
                        'widget' => 'single_text',
                        'label' => 'date.to',
                        'required' => false,

                    ]);

Thanks. [EDIT_1]: My template:

<h1>Statistic creation</h1>
{{ form_start(form) }}
{{ form_widget(form) }}
<input type="submit" value="Create"/>
{{ form_end(form) }}

Answer 1

The solution was to override buildView method in StatisticFieldType (embedded form type) and get the data from the form :

   /**
     * {@inheritDoc}
     */
    public function buildView(FormView $view, FormInterface $form, array $options)
    {
        // For Symfony 2.1 and higher:
        $view->vars['label'] = $form->getData()->getName();
    }