Several photos Gallery Titanium

Hi every-one;

I want to select more than one photo when I use the method openPhotoGallery() in IOS. In Android, I have found the solution in a module, but I cannot use it for IOS. The problem is something like this, when I want to open the Gallery:

Titanium.Media.openPhotoGallery({
    success : function(event) {
        elegirEvento(event.media);
    },
    cancel : function() {
 
    },
    error : function(error) {
        alert("Errorzacooooo");
    },
    saveToPhotoGallery : false,
 
    allowEditing : true,
    mediaTypes : [Ti.Media.MEDIA_TYPE_PHOTO]
});

Thanks

Alvaro Real