question

There are several issues in the above CloudScript code. You can check them in the following list.

1. CloudScript functions can’t have two “args” parameter, the function will only take the first parameter as the “args”. It’s pre-defined in the PlayFab CloudScript environment. So, it’s incorrect to use “arg1”,”arg2” to hold two K/V pairs. CloudScript environment will take the first one as “args”, and take the second one as “context”. Hence, the variable officialBuildVersion will be null here. You will also can’t log it via log.info. If you have not learned more about the pre-defined Function Parameters in the CloudScript yet, you can check this title “Writing custom CloudScript -> Intermediate Overview: Globals and advanced arguments” first.
2. The request body of GetTitleData should only contain keys array, other content in it will not take effects. You can write two keys in one request body if you want.
3. The request body of SetTitleData should contain only one K/V pair. If you write multiple K/V pairs in it, PlayFab won’t return an error but will only set the last one. Then because officialBuildVersion is null and when a value is set to null its K/V pair will be removed. So finally you removed NewTestBuildVersion via your code.
4. Even if this K/V pair is exited in the Title Data, server should still use SetTitleData API to update it, it’s incorrect to use “testVersion["OldTestBuildVersion"] = oldQABuildVersion;” to update a K/V pair.
5. After SetTitleData is called successfully, the data on PlayFab Server won’t be updated immediately, there will be a short interval. Please don’t GetTitleData immediately to confirm if it is updated successfully. You can hold the verification function in another handlers function, then call it on clients to verify the title data after an interval.

You can refer to the following code for more details.

handlers.UpdateVersions = function (args, context) {
    var oldQABuildVersion = Number(args.oldTestBuildVersion);
    var officialBuildVersion = Number(args.recentBuildVersion);

    var setOldTestBuildVersionRequest = {
        "Key": "OldTestBuildVersion",
        "Value": oldQABuildVersion,

    };

    var setNewTestBuildVersionRequest = {

        "Key": "NewTestBuildVersion",
        "Value": officialBuildVersion
    };

    var setTestBuildVersionResponse = server.SetTitleData(setOldTestBuildVersionRequest);
    var setNewTestBuildVersionResponse = server.SetTitleData(setNewTestBuildVersionRequest);

    return { result: setNewTestBuildVersionResponse.Data };
};

handlers.CheckVersions = function (args, context) {
    CheckVersionsFuc(["OldTestBuildVersion", "NewTestBuildVersion"]);
};

function CheckVersionsFuc(array) {
    var versions = server.GetTitleData({ Keys: array });

    if (versions.Data.hasOwnProperty("OldTestBuildVersion")) {
        var testVersion = versions.Data["OldTestBuildVersion"];
        log.info("key found, OldTestBuildVersion is " + testVersion);
    } else {
        log.info("key not found, will create new OldTestBuildVersion");
    }

    if (versions.Data.hasOwnProperty("NewTestBuildVersion")) {
        var buildVersion = versions.Data["NewTestBuildVersion"];
        log.info("key found, NewTestBuildVersion is " + buildVersion);
    } else {
        log.info("key not found, will create new NewTestBuildVersion");
    }

    return { OldTestBuildVersion: testVersion, NewTestBuildVersion: buildVersion };
};