question

Hi, I'm getting to learn PlayFab, and what I'm using this code to do get player read-only data and then modify it and then save it back.

handlers.UpdatePlayerLevelDetail = function (args, context){
    let data = server.GetUserReadOnlyData({
       PlayFabId: currentPlayerId, Keys: ["userEachLevelScore", "userEachLevelStar"]
    });
    log.debug("data", data);
    // add more value 
    // update new value
    return {"data": data};
}

The data in log.debug is empty but data is not empty in return.

here is my read-only data

Does it mean that I have to change data on client and then just call the update function on server?