No Zoom for Android ScrollableView

I am using Alloy so I have

<ScrollableView id="scrollableView" dataCollection="$.contents" dataTransform="transformFunction">
    <View itemId="{id}"/>
</ScrollableView>

On Android I get a grey bar with 2 magnifying glasses (- / +) but this does not affect the image in the view.

Since I am using Alloy it is not clear to me how to apply the MaxZoomScale to the dynamic views of the scrollableView.

I have tried adding it to the XML and to the tss files but with no results.

This works fine in iOS so what do I need to do to make this happen in Android?

Thank you, George