# The function setTrackOffset() doesn't exist?

**URL:** https://discourse.processing.org/t/the-function-settrackoffset-doesnt-exist/18570
**Category:** Libraries
**Created:** [March 10, 2020, 4:47pm UTC](https://discourse.processing.org/t/the-function-settrackoffset-doesnt-exist/18570 "2020-03-10T16:47:30Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Houssam](https://avatars.discourse-cdn.com/v4/letter/h/b782af/32.png) [@Houssam](https://discourse.processing.org/u/Houssam)
#### Post date: [March 10, 2020, 4:47pm UTC](https://discourse.processing.org/t/the-function-settrackoffset-doesnt-exist/18570/1 "2020-03-10T16:47:30Z")

</div>

Hi everyone !  
I wonder why the public member function setTrackOffset ( float \* offset \* ) doesn’t work .  
note that i am using G4P library  
is there any solution !  
`kb.setTrackOffset(0.0f);`  
 ![image](https://canada1.discourse-cdn.com/flex036/uploads/processingfoundation1/original/2X/c/cf63f9fb3d10cd3872109508373573b5728220ee.png)

---

<div class="post-metadata">

### Author: ![jeremydouglass](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jeremydouglass/32/20_2.png) [@jeremydouglass](https://discourse.processing.org/u/jeremydouglass)
#### Post date: [March 13, 2020, 3:30am UTC](https://discourse.processing.org/t/the-function-settrackoffset-doesnt-exist/18570/2 "2020-03-13T03:30:27Z")

</div>

> [@Houssam](#):
>
> doesn’t work

What do you mean? What do you expect to happen, and what happens instead? Is there an error message?