How to control checkbox "checked" value with unknown amount of checkboxes

So I have a screen where I render unknown amount of checkboxes depending on the list size. How can I control "checked" value of these boxes?
I am using react-native-elements for checkboxes.

Render method for checkboxes:

    _showChoices = (list) => {
        return list.map((item, i) => {
            return (
                <CheckBox
                title={item.choice_name}
                checked={}
                size={25}
                onIconPress={() => {}}
                onPress={() => {}}
                key={item.choice_id}
                />
            )
        })
    }

If you need any more info please comment.

Thanks!