My builidng are flaoting

I am making a building system and for some reason it will allow to build in the air

F isBuild Floating? posted by pevpev | blueprintUE | PasteBin For Unreal Engine

FBuildPlacementCheck posted by pevpev | blueprintUE | PasteBin For Unreal Engine

FCheckForOverlap posted by pevpev | blueprintUE | PasteBin For Unreal Engine

FCanPlaceCeiling? posted by pevpev | blueprintUE | PasteBin For Unreal Engine

I had a hard time putting them on the site so I put them on a website for blueprints and then put the links to them