question

Here is a sample:

First of all, you will maintain an entry in Title Data that stores the information of VC granting event. Then you will need Cloud Script functions to validate the player (cooldowns and etc.), and write custom Event (using title data).

• Title Data:

Key = “VC1_loginreward”

Value = 200

• Player internal data (title):

Key = “LoginRewardTimestamp”

Value = 1555049051135 //you can get this via getTime() in JavaScript.

• Cloud Script

handlers.loginReward = function (context) {
    var verificationFlag = false;
    var myTime = new Date();
    var Now = myTime.getTime();
    
//get title data
    var TitleDataRequest = {"Keys":["VC_loginreward"]};
    var TitleDataResponse = server.GetTitleData(TitleDataRequest);
    if(!TitleDataResponse.Data.hasOwnProperty("VC_loginreward"))
    {
        log.error("Event notfound. Exiting..."); 
        return JSON.stringify([]);
    }
    else
    {
	var VC_loginreward = TitleDataResponse.Data.VC_loginreward;
    }

//get player data
    var playerDataRequest = {"PlayFabId": currentPlayerId,"Keys":["LoginRewardTimestamp"]};
    var playerDataResponse = server.GetUserInternalData(playerDataRequest);
    if(!playerDataResponse.Data.hasOwnProperty("LoginRewardTimestamp"))
    {
	// Not found means this is the first time to grant reward, just record the time
	server.UpdateUserInternalData(
	{
	    "PlayFabId":currentPlayerId,
	    "Data":{"LoginRewardTimestamp":Now}
	}
	);
	verificationFlag = true;
    }
    else
    {
	var timestamp =  playerDataResponse.Data.LoginRewardTimestamp;
	//validate cooldown
	if (Now - timestamp > 300000000) // 3.4 days
        {
	    verificationFlag = true;
	}
    }

    if (verificationFlag == true)
    {
	server.AddUserVirtualCurrency(
        {
	    "PlayFabId":currentPlayerId,
	    "VirtualCurrency":"VC",
	    "Amount": VC_loginreward
    	});

	//generate custom playstream event

	server.WritePlayerEvent({"EventName":"VC_loginreward","PlayFabId":currentPlayerId});
    }

}

Still, It is just a very simple example and many places are hard coded. If you just want to know the API usage in Cloud Script, this works fine. But granting the VC according to custom events is not recommended and unsafe because the PlayStream events can be duplicated. In my sample, you only need to call WritePlayerEvent API, to grant the VC (amount is defined in the title data). Please feel free to reply this answer so that we can provide more help.

handlers.collectMoney = function (args, context) {
    
        
    var myTime = new Date();
    var Now = myTime.getTime();
    var seconds = 0;
    var playerTimeDataRequest = {"PlayFabId": currentPlayerId, "Keys":["MoneyTimeStamp"]};
    var playerTimeDataResponse = server.GetUserData(playerTimeDataRequest);
    if(!playerTimeDataResponse.Data.hasOwnProperty("MoneyTimeStamp")) {
        server.UpdateUserData({"PlayFabId":currentPlayerId, "Data":{"MoneyTimeStamp":Now}});
        seconds = 86400000;
    }
    else {
        var timeStamp = playerTimeDataResponse.Data.MoneyTimeStamp;
        
        if (Now - timeStamp > 86400000) {
            seconds = 86400000;
        }
        else {
            seconds = Now - timeStamp;
        } 
    }
    server.UpdateUserData({"PlayFabId":currentPlayerId, "Data":{"MoneyTimeStamp":Now}});
    seconds = seconds / 1000;
   
    
    return {moneyAmount: moneyAmount};
};