Facebook.AndroidFacebook.AppEventsLogPurchase C# (CSharp) Method

        public override void AppEventsLogPurchase(
            float logPurchase,
            string currency = "USD",
            Dictionary<string, object> parameters = null)
        {
            var paramsDict = new Dictionary<string, object>();
            paramsDict["logPurchase"] = logPurchase;
            paramsDict["currency"] = (!string.IsNullOrEmpty(currency)) ? currency : "USD";
            if (parameters != null)
            {
                paramsDict["parameters"] = ToStringDict(parameters);
            }
            CallFB("AppEvents", MiniJSON.Json.Serialize(paramsDict));
        }