Hi. My ATR based (end of day) trailing stop loss code works well in ProBacktest: close<(Highest[BarIndex-TradeIndex+1](high)-(ATR*2.5)) However, when I try to code it as an indicator on charts, the following error message is displayed: BUY/STOP orders are only allowed in ProBackTest Why is this trailing SL not allowed as an indicator? Can you suggest an alternative solution? Thanks in anticipation,