# How to get a trigger from a certain time passed in the audio track?
**URL:** https://qa.fmod.com/t/how-to-get-a-trigger-from-a-certain-time-passed-in-the-audio-track/17235
**Category:** Unity
**Tags:** unity
**Created:** [May 22, 2021, 6:17pm UTC](https://qa.fmod.com/t/how-to-get-a-trigger-from-a-certain-time-passed-in-the-audio-track/17235 "2021-05-22T18:17:48Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@lino49](https://qa.fmod.com/u/lino49)
#### Post date: [May 22, 2021, 6:17pm UTC](https://qa.fmod.com/t/how-to-get-a-trigger-from-a-certain-time-passed-in-the-audio-track/17235/1 "2021-05-22T18:17:49Z")
Hey
So the thing I wanted to do for my Unity project is that, I have an FMOD event with its different tracks and parameters.
Now, what I want to do is to find a way to trigger the parameters when the audio tracks get at a certain point in their time.
It’s not easy to expain but for example, I’d want to say like “parameter number 1 takes this value once the track number 1 is at 30 seconds, and when it’s at 40 seconds it returns to its original value”
What I managed to do so far is just to trigger the parameter values on the Unity side with a simple keypress input, but I’m not sure how I would manage to trigger the parameters from the audio time. Do I need to add something in my FMOD event? Or is it just on Unity components I need to add?
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### Author:  [@Alcibiade](https://qa.fmod.com/u/Alcibiade)
#### Post date: [May 22, 2021, 10:48pm UTC](https://qa.fmod.com/t/how-to-get-a-trigger-from-a-certain-time-passed-in-the-audio-track/17235/2 "2021-05-22T22:48:55Z")
Hi, command instruments are the exact thing for doing this!
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### Author:  [@lino49](https://qa.fmod.com/u/lino49)
#### Post date: [May 23, 2021, 2:56pm UTC](https://qa.fmod.com/t/how-to-get-a-trigger-from-a-certain-time-passed-in-the-audio-track/17235/3 "2021-05-23T14:56:34Z")
Ok, I’ll try to look around what those command instruments are and see if it’s not too long to understand and implement