Get Game State cast to my game state always fails in level blueprint. Why?

Here is my World Settings of level:


Here is “simulated” loop of fail casts in level blueprint:

Can I use “Get Game State” in level blueprint? If yes. when and how?

Just to mention, everything is saved and compiled.

Please help!

There the blueprints button on toolbar, press the small arrow near it and try to change the Project Settings Game Mode, that should do the trick(I think).

It seems it does. Thanks!

I had the exact same setup and had to restart the Editor in 4.12.5 for this to work.
Posting in case someone else runs into it!