overScrollMode How To

I'm using SDK 3.1.2 and coding in Alloy. I'm trying to use overScrollMode to remove the shadow-like effect on android.

"ScrollView":{
    top: "0dp",
    height: Ti.UI.FILL,
    width: "100%",
    overScrollMode: Titanium.UI.Android.OVER_SCROLL_NEVER
},