question

Hi, I may have come up with a solution for you. The basic idea is that when the player makes a choice, write a custom event using WritePlayerEvent API, then PlayFab will trigger an action (a Rule is defined to react to the custom player event) to update the number of each choice. Here are the steps I took to achieve your requirements:

1. Define a new rule, you can name it “RecordA”, the “Event Type” field should be a custom event you wrote using WritePlayerEvent API, for instance, you can name it “title.xxxxx(your title id).player_choice_A”:

2. For Actions, Action type is “ExecuteCloudScript”, the CloudScript function is a function I wrote to update the number of each choice, here is the code:

handlers.RecordChoiceA = function(args){
    var recordA = server.GetTitleData({
        Keys:["ChoiceA"]
    }).Data.ChoiceA;
    var count = parseInt(recordA);
    count ++;
    server.SetTitleData({
        Key: "ChoiceA",
        Value: count
    });
    
}											

3. Define two Title Data, RecordA and RecordB, for instance, set the value to be 2.

4. Call WritePlayerEvent API, for instance, let EventName field be “player_choice_A”. PlayFab will generate an event called “title.xxxx.player_choice_A” and triggers Action defined in Rule “RecordA”, then the function will be executed, related title internal data will be updated. You will find that RecordA defined in Title Data is 3. For choice B, you can set a similar Rule to record it.

From the client, when the player makes choice A/B, write player event “player_choice_A/B” to record the number of choice A/B, when you need to know the proportion of each choice, just call GetTitleData API to get the number of each choice and calculate the proportion.

By the way, as far as I am aware, the Event Type is just the name of the events, for custom events, you must start with "title.TitleId". Each event type has a set of properties that are included as part of event's data wherever it is sent. You can view these properties and build rules for triggering actions based on their values in the PlayStream tab of the Game Manager.Here is the doc you may find helpful: https://docs.microsoft.com/en-us/gaming/playfab/features/analytics/metrics/playstream-events#custom-event-overview