Titanium mapview not working well
===

I'm using Geocoder to to translate the address, given through a text field, in terms of latitude and longitude and then set the map region to that location as follows.

    var location = Titanium.UI.createTextField({...});
    var btnSearch = Titanium.UI.createButton({...});
    var mapview = Titanium.Map.createView({
        top: 75,	height: 350,
	    mapType: Titanium.Map.SATELLITE_TYPE,
	    animate: true,	regionFit: true,	userLocation: true
    });
    btnSearch.addEventListener('click',function(e){
        if(location.value != '') {
            Ti.Geolocation.forwardGeocoder(location.value, function(e){
                Ti.API.info(location.value + '\'s co-ordinates are: ' + e.latitude + ' lat, ' + e.longitude + ' lon');
                mapview.region = {latitude: e.latitude, longitude: e.longitude, latitudeDelta:0.1, longitudeDelta:0.1};
            });
        } 
        else {
            alert('You must provide a start address!');
        }
    });

The translation process works fine but the map region is not set to new coordinates in mapview. If anybody knows the cause of this problem, please help me.

Thanks.