Using Codeception with form input array

So I am trying to use Codeception on a form where I have multiple inputs that have a name like such.

<input type="text" name="flavours[]" >

I have tried

$I->fillField('flavors[]', 'Blue Razberry');

However Codeception returns

Couldn't fill field "flavors[]","Blue Razberry":
InvalidArgumentException: Unreachable field ""  unable to find a field with that name. 

Is it possible in Codeception? If not, is there another way?

Thanks in advance!