# Automate parameter

**URL:** <https://qa.fmod.com/t/automate-parameter/13971>\
**Category:** Unreal Engine\
**Created:** [June 26, 2018, 5:19pm UTC](https://qa.fmod.com/t/automate-parameter/13971 "2018-06-26T17:19:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Saphire\_Systrine](https://avatars.discourse-cdn.com/v4/letter/s/67e7ee/32.png) [@Saphire\_Systrine](https://qa.fmod.com/u/Saphire_Systrine)\
**Post date:** [June 26, 2018, 5:19pm UTC](https://qa.fmod.com/t/automate-parameter/13971/1 "2018-06-26T17:19:28Z")

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Hello there. I am have built a setup for a car engine sound, and I am looking to automate a parameter I made called “startup”  
I have it set up simply as a sequence of sounds in 1 event, using variables to jump from one section to another.  
In the setup, the first is the engine loop, which, if “startup” is set to 1, it immediately plays the startup sound, and then gets sent back to the loop. But, since startup is still 1 it stays playing that sound.

I need to be able to turn on the startup variable and immediately switch it off through automation. Any tips?

Windows 10

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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:** [June 27, 2018, 4:25am UTC](https://qa.fmod.com/t/automate-parameter/13971/2 "2018-06-27T04:25:47Z")

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Hi Saphire,

You should be able to achieve this by adding a negative velocity to the startup parameter.

[https://www.fmod.com/resources/documentation-studio?page=welcome-to-fmod-studio.html#parameter-properties](https://www.fmod.com/resources/documentation-studio?page=welcome-to-fmod-studio.html#parameter-properties)

I hope this helps.

Thanks,  
Richard