Draw object from one timeframe on another timeframe

Hi

I'm starting work on an indicator to draw rectangles at supply and demand zones and I'd like to be able to draw these rectangles from different timeframes regardless of the time frame I'm currently displaying. For example, I may be on the 15min timeframe, but I want it to display the zones using data from the hourly candles.

I'm just starting out and so just using horizontal lines before updating it to rectangles etc. The code below draws a horizontal line at the high of each hourly candle as expected however, I was expecting it also draw the horizontal line at the hourly high if I was on a different timeframe. Currently, it doesn't draw a line unless I'm also viewing the hourly chart.

using System;

using cAlgo.API;

using cAlgo.API.Internals;

using cAlgo.API.Indicators;

using cAlgo.Indicators;

namespace cAlgo

{

    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]

    public class Test : Indicator

    {

        [Parameter("1Hr", DefaultValue = true)]

        public bool oneHr { get; set; }

        private Bars oneHrBars;

        protected override void Initialize()

        {

            // Initialize and create nested indicators

            oneHrBars = MarketData.GetBars(TimeFrame.Hour);

        }

        public override void Calculate(int index)

        {

            // Calculate value at specified index

            // Result[index] = ...

            if (oneHr == true)

            {

                Chart.DrawHorizontalLine("Hourly High", oneHrBars.HighPrices.Last(1), Color.Cyan);

            }

        }

    }

}