I am trying to create an audio occlusion system, it kind of works however when i try to set the LPF frequency, it doesn't change

[anonymous_user_a5dd9692]

I have attached a bunch of pictures to show what I mean and have attached a link to my code. Any suggestions would be greatly appreciated!

code: occlusion component not applying the LPF posted by anonymous | blueprintUE | PasteBin For Unreal Engine