protected override void OnBarUpdate()
{
if ((ToTime(Time[0]) >= session1Start && ToTime(Time[0]) < session1End)&& !StopTrading)
{
BackColor = Color.DarkKhaki; //set background means we're in the trading session
if(OpenBell) PlaySound("bell.wav");
OpenBell = false;
CloseBell = true;
}
}

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