Has ANYONE been able to customize item name="android:homeAsUpIndicator"

I have tried pretty much every thread and android forum to try to find a way to customize the back arrow, and nothing seems to be working.
Has anyone been able to modify their back button / homeAsUpIndicator in the actionbar ?

Or is this a unknown bug ?

<style name="MyActionBar" parent="@android:style/Widget.Holo.Light.ActionBar.Solid.Inverse">
       <item name="android:homeAsUpIndicator">@drawable/arrow</item>
 </style>