Esercitazione tp e sl

//@version=4                                              (Esercitazione tp e sl low-atr)
strategy(title="Esercitazione tp e sl",
     shorttitle="Prova",
     overlay=true,
     pyramiding=0,
     default_qty_type=strategy.cash,
     default_qty_value=100,
     initial_capital=1000,
     currency=currency.USD,
     commission_type=strategy.commission.cash_per_order,
     commission_value=1)

smaV=sma(close, 20)
smaL=sma(close, 30)

plot(smaV)
plot(smaL)

sl = low - atr(14)
plot(sl, color=red)


cond_entry_long=crossover(smaV, smaL)
//cond_exit_long=crossunder(smaV, smaL)


strategy.entry("Long", true, when=cond_entry_long)
strategy.exit ("Long", loss=sl)