bAutoRegisterAllPawnsAsSources in .ini not working

Hi, I have a small problem with the Perception-System. I set it up in C++ and got it working, but it is detecting all pawns. I dont even have any Pawns as Stimulus registered.
I googled the problem and found some answers by Miesko and others.

When i add this to my DefaultGame.ini or DefaultEngine.ini it should prevent this auto registration from happening, but it doesnt work for me.

 [/Script/AIModule.AISense_Sight]
 bAutoRegisterAllPawnsAsSources=false

Whats my mistake? Did they change it again? Any help apreciated.

Mr Bumpington here.