Multi Select - dynamic values do not show

[Oksana-MetushiHideo]

Hi, i'm trying to use multi select and i want to pass the values from another module, i have a post module and category module, each post can have more than one category, this is my code.
When i do a dd of app()->make(CategoryRepository::class)->listAll() the right values come but when i do dd of 'categories', it come just this 'categories'
'categories' => app()->make(CategoryRepository::class)->listAll(),

$form->add(
MultiSelect::make()
->name('categories')
->label('Categories')
->unpack(false)
->options(Options::make('categories'))
);