[Tera] How to access fields of `__tera_context`?

Hello!

When I tried to access __tera_context["current_path"] (using {{ __tera_context["current_path"] }}) it gave following error:

Variable `__tera_context["current_path"]` not found in context

But I can see "current_path" field in __tera_context (using {{ __tera_context }}).

Thanks!