Print to Log is not working

I have the following code running in cAlgo but run I add the indicator to a chart, nothing is displayed in the Log at the bottom. Does anyone know why?

using System;
using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class PivotPoints : Indicator
    {
        //private DateTime dtStart;

        [Parameter(DefaultValue = "Classic")]
        public string Name { get; set; }

        [Output("Main")]
        public IndicatorDataSeries Result { get; set; }

        protected override void Initialize()
        {
            // Initialize and create nested indicators
            Print("hello");
        }

        public override void Calculate(int index)
        {
            // Calculate value at specified index
            //Result[index] = MarketSeries.High[index] - MarketSeries.Low[index];

            Print(index);
        }
    }
}