# problem when using Snapshot

**URL:** <https://qa.fmod.com/t/problem-when-using-snapshot/11775>\
**Category:** FMOD Studio\
**Created:** [January 1, 2015, 8:10am UTC](https://qa.fmod.com/t/problem-when-using-snapshot/11775 "2015-01-01T08:10:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dtbs](https://avatars.discourse-cdn.com/v4/letter/d/e0b2c6/32.png) [@dtbs](https://qa.fmod.com/u/dtbs)\
**Post date:** [January 1, 2015, 8:10am UTC](https://qa.fmod.com/t/problem-when-using-snapshot/11775/1 "2015-01-01T08:10:49Z")

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Hi there and thanks for your time to read this.I got this question when using FMOD Studio

I thought the effect added within Snapshot only works when Snapshot is triggered.but when I added Lowpass to a event group within the Snapshot,the lowpass effect has a direct effect on the group without Snapshot being triggered.So I wonder what else I need to do to get the event group stay unchanged until the Snapshot is triggered with lowpass to it.

hope to get your reply soon.Thanks a lot.

```
                             Shane
```

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<div class="post-metadata">

**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:** [January 12, 2015, 12:03am UTC](https://qa.fmod.com/t/problem-when-using-snapshot/11775/2 "2015-01-12T00:03:44Z")

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Snapshots don’t yet support adding or removing effects from signal chains. However, they do allow you to assign different values to the properties of those effects - meaning that you should set the cutoff property of your Lowpass effect to the maximum kHz value normally, and assign it a much lower value in the snapshot, you will be able to “bring in” the Lowpass effect when the snapshot is triggered.