Set accept attribute at CustomerFormatter

[Shara_AC]

CustomerFormatter.php

if ($this->ask_for_image_upload) { 
            $format['image'] = (new FormField())
                ->setName('image')
                ->setType('file')
                ->setAccept('image/*')
                ->setLabel(
                    $this->translator->trans(
                        'Upload foto toko', [], 'Shop.Forms.Labels'
                    )
                )
                ->setRequired(false)
            ;
        }

this my code, i have problem for extra attribute accept="image/*" in form register,

 

please help me