# FMOD occlusion global param not working **URL:** \ **Category:** Unreal Engine\ **Tags:** ue4\ **Created:** [August 5, 2021, 2:43pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531 "2021-08-05T14:43:46Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![zackregansounds](https://avatars.discourse-cdn.com/v4/letter/z/b5e925/32.png) [@zackregansounds](https://qa.fmod.com/u/zackregansounds)\ **Post date:** [August 5, 2021, 2:43pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531/1 "2021-08-05T14:43:46Z")
I am trying to set up audio occlusion with FMOD and it works fine when I use a local param however when I change it to global, it does’nt. ---
**Author:** ![Alcibiade](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/alcibiade/32/4284_2.png) [@Alcibiade](https://qa.fmod.com/u/Alcibiade)\ **Post date:** [August 5, 2021, 3:03pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531/2 "2021-08-05T15:03:48Z")
Why would you use a global parameter? Occlusion has to be different for each event, depending of its location, hence the use of a local parameter. ---
**Author:** ![joseph](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/joseph/32/264_2.png) [@joseph](https://qa.fmod.com/u/joseph)\ **Post date:** [August 5, 2021, 11:55pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531/3 "2021-08-05T23:55:04Z")
As Alcibiade says, it’s hard to imagine how occlusion would work in conjunction with a global parameter. Why do you not want to use a local parameter in this case? ---
**Author:** ![zackregansounds](https://avatars.discourse-cdn.com/v4/letter/z/b5e925/32.png) [@zackregansounds](https://qa.fmod.com/u/zackregansounds)\ **Post date:** [August 6, 2021, 4:37pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531/4 "2021-08-06T16:37:42Z")
So I did realize my mistake on that. Now I am trying to get Occlusion working. Do I have to enable Occlusion for everything in UE? Not sound source placed in the level but a robot for example. IMO it doesnt sound natural in an environment like this. Where its behind an open wall ![SOJoBkxub9](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/8/837a82ad532be28a4f6914b56c99ef9ed1e7322a.jpeg) ![UnrealEditor_mqRlo2xAI6](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/8/81f348856841167927d5a0917bbd5e8c4420fc7c.png) ---
**Author:** ![zackregansounds](https://avatars.discourse-cdn.com/v4/letter/z/b5e925/32.png) [@zackregansounds](https://qa.fmod.com/u/zackregansounds)\ **Post date:** [August 6, 2021, 5:44pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531/5 "2021-08-06T17:44:07Z")
IK I can add a reverb to the sound to achieve what I am looking for. But I tried to apply the occlusion param to a snapshots reverb dry wet but it doesnt work. ---
**Author:** ![Alcibiade](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/alcibiade/32/4284_2.png) [@Alcibiade](https://qa.fmod.com/u/Alcibiade)\ **Post date:** [August 6, 2021, 7:00pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531/6 "2021-08-06T19:00:34Z")
This is more a question related to UE4 than FMOD. You could deactivate the occlusion for that specific wall. Or maybe set the occlusion to another type of tracing than visibility. ---
**Author:** ![zackregansounds](https://avatars.discourse-cdn.com/v4/letter/z/b5e925/32.png) [@zackregansounds](https://qa.fmod.com/u/zackregansounds)\ **Post date:** [August 6, 2021, 7:22pm UTC](https://qa.fmod.com/t/fmod-occlusion-global-param-not-working/17531/7 "2021-08-06T19:22:25Z")
OOOH Ok I didnt know that those options actually did anything lol, regarding to visibilty