Timer crashes in Blueprint classes inherited from Object

Hello, in Blueprint class I try use Timers like this https://docs.unrealengine.com/latest/INT/Gameplay/HowTo/UseTimers/Blueprints/index.html.
But aplication in runtime crashes when this class call timer or any function binding this timers - FIterp To.
In log next message - “Ensure condition failed: false [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\CoreUObject\Private\UObject\Obj.cpp] [Line: 628]
Unsupported context object of class TestTimer_C (SuperClass(es) - Object). You must add a way to retrieve a UWorld context for this class.”

It’s because the Object class has no innate ability to access the world. From blueprints, you should probably use an actor component instead.