普通上传正常，关联上传文件不知怎么办

如果image字段是一个数组应该怎么上办？

var file = new AV.File('ttt.jpg', { base64: "data:image/ico;base64,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" });

var user = AV.Object.createWithoutData('Todo', '5763bd36df0eea0062e0e1d3');
user.set('image', file);
user.save().then(function(ret) {
console.log(JSON.stringify(ret));
}, function(error) {
console.log('Error: ' + error.code + ' ' + error.message);
});