Mapping - lock axis and position

[m1ga]

Setup is like this:

var all = Ti.UI.View({width:600,height:100});
var handle =  Draggable.createView({
                width:20,
                height:100,
                backgroundColor:"#f00",
                right:0,
                top:0,
                draggableConfig : {
                    axis:"y",
                    ensureRight : true,
                    ensureBottom : true,
                    maps: [{
                        view:all,
                        parallaxAmount:1
                    }]
                }
            });

all.add(handle);

How can I prevent the red handle from moving outside and how can I set the axis for the mapped view to y only?