问为什么pincolor属性给了我一个ti.map错误？

EN

var Map = require('ti.map');
var win = Titanium.UI.createWindow();

var mountainView = Map.createAnnotation({
    latitude:37.390749,
    longitude:-122.081651,
    title:"Appcelerator Headquarters",
    subtitle:'Mountain View, CA',
    pincolor:Map.ANNOTATION_RED,
    myid:1 // Custom property to uniquely identify this annotation.
});

var mapview = Map.createView({
    mapType: Map.NORMAL_TYPE,
    region: {latitude:33.74511, longitude:-84.38993,
            latitudeDelta:0.01, longitudeDelta:0.01},
    animate:true,
    regionFit:true,
    userLocation:true,
    annotations:[mountainView]
});

var circle = Map.createCircle({
    center: { latitude: 33.74511, longitude: -84.38993 },
    radius: 1000, //1km
    fillColor: "#20FF0000"
});
mapview.addCircle(circle);

win.add(mapview);
// Handle click events on any annotations on this map.
mapview.addEventListener('click', function(evt) {
    Ti.API.info("Clicked " + evt.clicksource + " on " + evt.latitude + "," + evt.longitude);
});
win.open();