# Question about the interface of Studio::Bus::setMute

**URL:** <https://qa.fmod.com/t/question-about-the-interface-of-studio-setmute/12628>\
**Category:** FMOD Studio\
**Created:** [August 4, 2016, 7:33am UTC](https://qa.fmod.com/t/question-about-the-interface-of-studio-setmute/12628 "2016-08-04T07:33:11Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![allm3](https://avatars.discourse-cdn.com/v4/letter/a/ac91a4/32.png) [@allm3](https://qa.fmod.com/u/allm3)\
**Post date:** [August 4, 2016, 7:33am UTC](https://qa.fmod.com/t/question-about-the-interface-of-studio-setmute/12628/1 "2016-08-04T07:33:11Z")

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Hi all, when I call the interface of Studio:🚌:setMute, it’s really return with the result of “FMOD\_OK”, but it’s not valid in fact . The sounds is playing as well. By the way, it’s can also to call “createInstance” as usual. Is the third party of voice function affects the underlying bus settings ?  
The problem will happen by accident . pls help me to solve this problem . Thanks!

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**Author:** ![nick1](https://avatars.discourse-cdn.com/v4/letter/n/47e85d/32.png) [@nick1](https://qa.fmod.com/u/nick1)\
**Post date:** [August 5, 2016, 1:03am UTC](https://qa.fmod.com/t/question-about-the-interface-of-studio-setmute/12628/2 "2016-08-05T01:03:58Z")

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Are you calling Studio::System::Update some time after you call setMute() to apply all the settings?

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**Author:** ![allm3](https://avatars.discourse-cdn.com/v4/letter/a/ac91a4/32.png) [@allm3](https://qa.fmod.com/u/allm3)\
**Post date:** [August 5, 2016, 1:28am UTC](https://qa.fmod.com/t/question-about-the-interface-of-studio-setmute/12628/3 "2016-08-05T01:28:43Z")

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> [@](#):
>
> Are you calling Studio::System::Update some time after you call setMute() to apply all the settings?

Thank you for your answer. I’ll try it . Is that necessary to call Studio::System::Update after call setMute() ?

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**Author:** ![nick1](https://avatars.discourse-cdn.com/v4/letter/n/47e85d/32.png) [@nick1](https://qa.fmod.com/u/nick1)\
**Post date:** [August 8, 2016, 12:37am UTC](https://qa.fmod.com/t/question-about-the-interface-of-studio-setmute/12628/4 "2016-08-08T00:37:35Z")

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All studio commands are batched until Update() is called to apply them.