Chart.FindAllObjects Not working since update

Hi,

Since the update yesterday 29/07/22 to 4.2.16

I had the following code and its stopped working and am confused why.

It appears nothing is being added into the FindAllObjects.

Thanks in advance.

 private double GetLine(string lineName)
        {
            symDigits = this.Symbol.Digits;
            double stopLine = 0;

            var lines = Chart.FindAllObjects<ChartHorizontalLine>();       
                                
            foreach (var line in lines)
            {           
                if (line.Comment == lineName)
                { 
                    stopLine = Math.Round(line.Y, symDigits);                    
                }
            }

            return stopLine;            
           
        }