我需要我的pinescript仅在指标设置好后设置买入订单，然后上涨5％并且条件或指标仍然为真。
下面是我当前的代码，我需要修改什么？ 有关如何执行此操作的任何想法？ 任何帮助将不胜感激
// @ version = 2 策略（“ EMA仅长期策略”，overlay = true，default_qty_type = strategy.percent_of_equity，default_qty_value = 100）
len = input(21, type=integer, minval=1, title="Length")
price = sma(close, 2)
average = ema(close, len)
diff = atr(len)
bull_level = average + diff
bear_level = average - diff
bull_cross = crossover(price, bull_level)
bear_cross = crossover(bear_level, price)
strategy.entry("Buy", strategy.long, when=bull_cross)
strategy.close("Buy", when=bear_cross) //strategy.entry("Sell",
strategy.short, when=bear_cross)
plot(price, title="price", color=green, transp=50, linewidth = 4)
plot(average, title="average", color=red, transp=50, linewidth = 4)
a1 = plot(bull_level, title="bull", color=red, transp=50, linewidth = 1)
a2 = plot(bear_level, title="bear", color=red, transp=50, linewidth = 1)
fill(a2, a1, color=red, transp=95)