# Listening to markers from events placed in a parent event's timeline

**URL:** https://qa.fmod.com/t/listening-to-markers-from-events-placed-in-a-parent-events-timeline/15881
**Category:** Unity
**Created:** [June 12, 2020, 5:06pm UTC](https://qa.fmod.com/t/listening-to-markers-from-events-placed-in-a-parent-events-timeline/15881 "2020-06-12T17:06:01Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![devDarjeeling](https://avatars.discourse-cdn.com/v4/letter/d/a698b9/32.png) [@devDarjeeling](https://qa.fmod.com/u/devDarjeeling)
#### Post date: [June 15, 2020, 10:04am UTC](https://qa.fmod.com/t/listening-to-markers-from-events-placed-in-a-parent-events-timeline/15881/3 "2020-06-15T10:04:04Z")

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Hey mathew,  
Thanks for the insight !

After some reasearch I found that I needed to transform all events instance within an event into “nested” through right click menus) [Nested Event Question](https://qa.fmod.com/t/nested-event-question/12204)

I managed to toggle all instance of events within my main event timeline into real nested event.  
But I still don’t receive any marker from the nested ones.

I also don’t see my nested events within unity’s fmod event window ( someone already asked for that while ago [Accessing nested events in unity](https://qa.fmod.com/t/accessing-nested-events-in-unity/15074/2) )

I couldn’t find anything regarding "FMOD\_STUDIO\_EVENT\_CALLBACK\_TIMELINE\_MARKER "

I’m using code from the topic I linked in my original question :

```
    case FMOD.Studio.EVENT_CALLBACK_TYPE.TIMELINE_MARKER:
      {
        //Debug.Log(parameterPtr);
        var parameter = (FMOD.Studio.TIMELINE_MARKER_PROPERTIES)Marshal.PtrToStructure(parameterPtr, typeof(FMOD.Studio.TIMELINE_MARKER_PROPERTIES));

```

I don’t have any issue other than that (logs/errors …)

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_[View the full topic](https://qa.fmod.com/t/listening-to-markers-from-events-placed-in-a-parent-events-timeline/15881)._