Facebook.AndroidFacebook.AppEventsLogEvent C# (CSharp) Method

        public override void AppEventsLogEvent(
            string logEvent,
            float? valueToSum = null,
            Dictionary<string, object> parameters = null)
        {
            var paramsDict = new Dictionary<string, object>();
            paramsDict["logEvent"] = logEvent;
            if (valueToSum.HasValue)
            {
                paramsDict["valueToSum"] = valueToSum.Value;
            }
            if (parameters != null)
            {
                paramsDict["parameters"] = ToStringDict(parameters);
            }
            CallFB("AppEvents", MiniJSON.Json.Serialize(paramsDict));
        }