# BUG(?): Nested event stops playing unexpectedly

**URL:** <https://qa.fmod.com/t/bug-nested-event-stops-playing-unexpectedly/17784>\
**Category:** FMOD Studio\
**Created:** [October 12, 2021, 9:54am UTC](https://qa.fmod.com/t/bug-nested-event-stops-playing-unexpectedly/17784 "2021-10-12T09:54:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**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:** [October 12, 2021, 9:54am UTC](https://qa.fmod.com/t/bug-nested-event-stops-playing-unexpectedly/17784/1 "2021-10-12T09:54:54Z")

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I have a nested parameter sheet with a local parameter (holding its value during playback) automated by a global parameter :

 ![image](https://canada1.discourse-cdn.com/flex036/uploads/fmod/original/2X/a/a0e90edb23e0ebf4cc522f1dc79a5e80f2a4cc7e.png)

In the parent event, if I change the global parameter value outside the trigger zone of the nested event, it works fine: the nested event continues to play until the end of its content, and then changes the parameter only at the next retrigger (while stacking with the tail of the previous instance). However, if I change the parameter value inside the nested event trigger zone, it stops playing when untriggered.

[![](https://img.youtube.com/vi/mV9thu_XzWc/hqdefault.jpg "FMOD: nested event untriggers unexpectedly") ](https://www.youtube.com/watch?v=mV9thu_XzWc)

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<div class="post-metadata">

**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:** [October 14, 2021, 9:15pm UTC](https://qa.fmod.com/t/bug-nested-event-stops-playing-unexpectedly/17784/2 "2021-10-14T21:15:31Z")

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Bump, with the project to download: [link](https://drive.google.com/file/d/1-hSxBPc9XUP4BuivCmmEoUNB8s6NC5Rj/view?usp=sharing). Bug #1, detailed description inside.

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**Author:** ![richard\_simms](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/richard_simms/32/261_2.png) [@richard\_simms](https://qa.fmod.com/u/richard_simms)\
**Post date:** [October 15, 2021, 12:39am UTC](https://qa.fmod.com/t/bug-nested-event-stops-playing-unexpectedly/17784/3 "2021-10-15T00:39:14Z")

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This appears to be a bug, but I need to verify with our development team if this is intentional to prevent infinitely looping nested instruments or not.