Pine script 我有一堆滞后

我想构建一个algo，它可以执行以下操作：

当价格超过20巴时，MA:买入
当价格交叉下跌20条时，MA:空头

你能帮我吗

//@version=3
study("My Script")
strategy("MA Crossover", overlay=true)

x = sma(close,1)
y = sma(close,20)

longCondition = crossover(x, y)
if (longCondition)
    strategy.entry("Long", strategy.long)

shortCondition = crossunder(x, y)
if (shortCondition)
    strategy.entry("Short", strategy.short)

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伙计。。。请更正我的代码。您正在编辑pointsdude的帖子。。。请更正我的代码。你只是在编辑文章的要点

//@version=4
strategy("MA Crossover", overlay=true, process_orders_on_close = true)

x = sma(close,1)
y = sma(close,20)

longCondition = crossover(x, y)
if (longCondition)
    strategy.entry("Long", strategy.long)

shortCondition = crossunder(x, y)
if (shortCondition)
    strategy.entry("Short", strategy.short)