Actually, the opposite. If `args[:hide_tab_bar] == false` then:

`false.nil? # => false`

So, changing it to this:

```ruby

# Does not fire if args[:hide_tab_bar] is `false` or `nil`.
screen.hidesBottomBarWhenPushed = args[:hide_tab_bar] if args[:hide_tab_bar]

```

...should work as expected. Makes sense?