# WWW.progress doesn't work

**URL:** https://discussions.unity.com/t/www-progress-doesnt-work/118664
**Category:** Questions & Answers
**Created:** [October 6, 2014, 11:52am UTC](https://discussions.unity.com/t/www-progress-doesnt-work/118664 "2014-10-06T11:52:56Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Subhajit-Nath](https://dub1.discourse-cdn.com/unity/user_avatar/discussions.unity.com/subhajit-nath/32/186566_2.png) [@Subhajit-Nath](https://discussions.unity.com/u/Subhajit-Nath)
#### Post date: [October 6, 2014, 11:52am UTC](https://discussions.unity.com/t/www-progress-doesnt-work/118664/1 "2014-10-06T11:52:56Z")

</div>

Hi there, we are building an Android / iOS game which has lots of levels as asset bundles to be downloaded by the player.

For some reason WWW.progress doesn’t work while trying get the downloaded percentage through log or UISlider. It returns 0 at the beginning and 1 at the end but nothing inbetween. Anything wrong with concept or code here?

```
WWW www = WWW.LoadFromCacheOrDownload ("http://*our host*/Yo.bundle", 1);
		while (!www.isDone)
		{
			progressBar.value = www.progress;
			Debug.Log ("Download = " + www.progress);
			yield return null;
		}

```

Thanks in advance.

---

<div class="post-metadata">

### Author: ![unimechanic](https://avatars.discourse-cdn.com/v4/letter/u/b19c9b/32.png) [@unimechanic](https://discussions.unity.com/u/unimechanic)
#### Post date: [October 9, 2014, 3:17pm UTC](https://discussions.unity.com/t/www-progress-doesnt-work/118664/2 "2014-10-09T15:17:20Z")

</div>

Check the first code example in this document:

> **[Unity - Scripting API: WWW](https://docs.unity3d.com/ScriptReference/WWW.html)**

It uses a coroutine:

> **[Unity - Manual: Coroutines](https://docs.unity3d.com/Manual/Coroutines.html)**