help please

hello
I am newbie on this platform I retrieve the codes that I have a little change (I know not program) I would like to know how to do to increase the size of my characters on my graphics in this code.
desolated for my English but I use google translate I am French
cordially

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

namespace cAlgo.Indicators
{
    [Indicator(IsOverlay = true, AccessRights = AccessRights.None)]
    public class DrawSpread : Indicator
    {
        public override void Calculate(int index)
        {
            if (IsLastBar)
                DisplaySpreadOnChart();
        }

        private void DisplaySpreadOnChart()
        {



            var sym = Symbol.Code;
            string text1 = string.Format("{0,321}", sym);
            ChartObjects.DrawText("Label1", text1, StaticPosition.TopRight, Colors.Yellow);

            var spread = Math.Round(Symbol.Spread / Symbol.PipSize, 5);
            string text = string.Format("{0,-121}", spread);
            ChartObjects.DrawText("Label", "\n\n", StaticPosition.TopRight, Colors.Yellow);
            ChartObjects.DrawText("spread", "\n" + text, StaticPosition.TopRight, Colors.White);

            var prix = Symbol.Ask;
            string text2 = string.Format("{0,-121}", prix);
            ChartObjects.DrawText("Label3", "\n\n\n\n", StaticPosition.TopRight, Colors.Yellow);

            ChartObjects.DrawText("Label2", "\n\n" + text2, StaticPosition.TopRight, Colors.Yellow);


        }
    }
}