Issue update a CKRecord
<p>I can't save a record, which is already saved. recordToSave is a CKRecord download from the server. Is it possible to update it? </p>

<pre><code>recordTosave.setValue("cat", forKey: "animal")

let publicData = CKContainer.defaultContainer().publicCloudDatabase

publicData.saveRecord(recordToSave, completionHandler:{(record: CKRecord?, error: NSError?) in
    if error == nil{  

    }else{
        print(error.debugDescription)
    }
})
</code></pre>