How to display data received on FormEvents:pre_set_data Symfony

Question

I'm trying to display data received on endpoint in twig.

    {
        $builder
            ->add('refundType', ChoiceType::class, [
                'label'    => 'form.transaction.refund.refundType',
                'choices' => [
                    'Total'   => 'total',
                    'Partial' => 'partial',
                ],
                'data'     => 'total',
                'expanded' => true,
                'multiple' => false,
            ])
            ->add('submerchants', CollectionType::class, [
                'entry_type' => SubmerchantSplitsEmbeddedForm::class,
            ]);

        $builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
            /** @var SubmerchantSplit|null $data */
            $data = $event->getData();

            if(!$data['data']['submerchantSplits']) {
                return;
            }

            $this->getSubmerchantSplits($event->getForm(), $data['data']['submerchantSplits']);
        });

    }

    public function configureOptions(OptionsResolver $resolver)
    {

    }

    private function getSubmerchantSplits(FormInterface $form, mixed $submerchantSplits)
    {
        dd($submerchantSplits);
    } 

When I try dd($submerchantSplits) I get a response with all data that I need, but I don't know how to associate keys of that array with my Model Class(SubmerchantSplit which is in the CollectionType) so I can display it in twig. My SubmerchantSplitsEmbeddedForm looks like that:

public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('name', TextType::class, [
                'label'    => 'form.common.labels.name',
            ])
            ->add('amount', NumberType::class, [
                'label'    => 'page.transaction.settlement.show.submerchant_amount',
            ]);
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            'data_class'     => SubmerchantSplit::class,
        ]);
    }

And this is my Model class (SubmerchantSplit)

{
    protected ?string $name;

    protected ?string $amount;

    public function __construct()
    {
    }

    /**
     * @return string|null
     */
    public function getName(): ?string
    {
        return $this->name;
    }

    /**
     * @param string|null $name
     */
    public function setName(?string $name): void
    {
        $this->name = $name;
    }

    /**
     * @return string|null
     */
    public function getAmount(): ?string
    {
        return $this->amount;
    }

    /**
     * @param string|null $amount
     */
    public function setAmount(?string $amount): void
    {
        $this->amount = $amount;
    }
} 

If I try to use foreach loop in twig, it doesn't show me name & amount because I don't know how to map array. Can someone help me with that?