Raytracing Translucency

Hello Everyone,
I’m new to RTX and I’m trying to set it up for a new scene I’ve been creating.
Without Raytracing the light goes through my glass material to bring light inside the building.
With Raytracing the light get’s blocked and no light goes through my glass material.
Did I forgot to enable some settings? I’ve followed Sjoerd’s video about updating to windows 1809 and adding the -dx12, I’ve also enabled raytracing in my project settings.