Fibonacci time zone indicator

hi 

i tried to change fibonacci levels to decimals number , but it gave me these errors :

Error CS1502: The best overloaded method match for 'cAlgo.API.ChartArea.DrawVerticalLine(string, System.DateTime, cAlgo.API.Color)' has some invalid arguments

Error CS1503: Argument 2: cannot convert from 'double' to 'System.DateTime'

i know why it gave me these errors( because they must be "int" not "double" , but my fibo levels are decimals so i need double)  , but i dont know how to solve it

here the cods , at the end you can see my decimals number and the errors part 

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

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class FiboTimeZone : Indicator
    {

        [Parameter("Color", DefaultValue = "Blue")]
        public string col { get; set; }
        [Parameter("Transparency %", DefaultValue = 50)]
        public int trsp { get; set; }
        [Parameter("Magic Number", DefaultValue = 0)]
        public int mgc { get; set; }

        private int x1;
        private int x2;

        private string selected = "none";
        private Color alphaColor;
        private string name;

        protected override void Initialize()
        {
            name = " " + mgc.ToString();
            Color color = Color.FromName(col);
            alphaColor = Color.FromArgb((int)(trsp * 2.55), color.R, color.G, color.B);
            drawCursors();
            Chart.ObjectHoverChanged += OnChartObjectHoverChanged;
            Chart.MouseUp += OnChartMouseUp;
        }

        void OnChartMouseUp(ChartMouseEventArgs obj)
        {
            if (selected == "cycle1")
            {
                x1 = (int)obj.BarIndex;
                drawCycles();
            }
            if (selected == "cycle2")
            {
                x2 = (int)obj.BarIndex;
                drawCycles();
            }
        }

        void OnChartObjectHoverChanged(ChartObjectHoverChangedEventArgs obj)
        {
            if (!obj.IsObjectHovered)
                selected = "none";
            else
                try
                {
                    if (obj.ChartObject.Name == "cycle1" + name)
                    {
                        selected = "cycle1";
                    }
                    else if (obj.ChartObject.Name == "cycle2" + name)
                    {
                        selected = "cycle2";
                    }
                    else
                        selected = "none";

                } catch (Exception e)
                {
                    return;
                }
        }

        private void drawCursors()
        {
            int index = Chart.FirstVisibleBarIndex + 10;
            Chart.DrawVerticalLine("cycle1" + name, index, alphaColor, 2);
            Chart.DrawVerticalLine("cycle2" + name, index, alphaColor, 2, LineStyle.DotsRare);
            Chart.FindObject("cycle1" + name).IsInteractive = true;
            Chart.FindObject("cycle2" + name).IsInteractive = true;
            x1 = index;
            x2 = index;
        }

        private void drawCycles()
        {
            for (int i = 0; i < Chart.BarsTotal + 1000; i++)
            {
                Chart.RemoveObject("FIBO_cycle" + i + " " + name);
            }
            if (Math.Abs(x2 - x1) > 1)
            {
                int coo1 = Math.Min(x1, x2);
                int coo2 = Math.Max(x1, x2);
                for (int i = 0; i < fibos.Length; ++i)
                {
                // errors part
                    double f = (double)fibos[i];
                    Chart.DrawVerticalLine("FIBO_cycle" + i + " " + name, coo1 + f * (coo2 - coo1), alphaColor);
                    double conjCoord = (Chart.TopY - Chart.BottomY) * 0.75 + Chart.BottomY;
                    Chart.DrawTrendLine("Conj", x1, conjCoord, x2, conjCoord, alphaColor);
                    Chart.DrawText("fibocyclename" + f, "" + fibos[i], coo1 + f * (coo2 - coo1) + 1, conjCoord, alphaColor);
                }
            }
        }

        private double[] fibos = new double[12] 
        {
            1,
            1.618,
            2,
            2.618,
            3,
            3.618,
            21,
            34,
            55,
            89,
            144,
            233
        };

        public override void Calculate(int index)
        {

        }
    }
}