如何将 pinescript 设置为仅在原始指标上方 5% 处购买一次

Question

我需要我的 pinescript 仅在指标设置后才设置买入订单，然后上涨 5% 并且条件或指标仍然为真。

以下是我当前的代码，我需要修改什么？ 关于如何做到这一点的任何想法？ 任何帮助将不胜感激

//@version=2 strategy("EMA 多头策略", 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)