swift sdk LCFile 上传图片字段为空

func saveToLC(album:AlbumMO)  {
    let cloudObject = LCObject(className: "Album")
    let month = album.month
    let img = album.image
    let lcFile = LCFile(payload: .data(data: img!))

    lcFile.name = LCString("\(month!)jpg")

// try! cloudObject.set("month", value: month)
// try! cloudObject.set("image", value: lcFile)
let lcMonth = LCString(month!)
cloudObject["month"] = lcMonth
cloudObject["image"] = lcFile as LCValue

    _ = lcFile.save { result in
        switch result {
        case .success:
            print("LC Save Success")
            break
        case .failure(let error):
            print(error,"LC Save Failed")
        }
    }

    
    _ = cloudObject.save { result in
        switch result {
        case .success:
            print("LC Save Success")
            break
        case .failure(let error):
            print(error,"LC Save Failed")
        }
    }
}

// try! cloudObject.set("month", value: month)
// try! cloudObject.set("image", value: lcFile)
let lcMonth = LCString(month!)
cloudObject["month"] = lcMonth
cloudObject["image"] = lcFile as LCValue

这里有2个方法，一般用哪个上传图片啊，上传后在_File里能看到图片链接，但是在自己创建的类里看不到啊，这是什么问题呀，大家有碰到过吗

{
"className": "Album",
"month": "1st",
"image": {
"provider": "qiniu"
},
"ACL": {
"*": {
"read": true,
"write": true
}
},
"objectId": "5cd7f0910f8ef5000926a151",
"createdAt": "2019-05-12T10:08:17.797Z",
"updatedAt": "2019-05-12T10:08:17.797Z"
}