当条件来自安全功能时，“警报条件”失败

如何解决当条件来自安全功能时，“警报条件”失败

我正在尝试根据源自安全功能的条件创建警报。

下面是相关的代码段和 here is the entire code。

s01 = input('BINANCE:BTCUSDT',type=input.symbol)
screenerFunc() => triggerA and triggerB
c01 = security(s01,res,screenerFunc())
alertcondition(condition=c01,title="Alert",message="Alert!")

但最后一行出现以下错误：

Cannot use a mutable variable as an argument of the security function.

感谢您的帮助！

解决方法

代码中有两个问题，第一，函数screenerFunc必须将所有字符串组合起来计算条件，第二，计算范围。字符串 画线也被注释掉了，因为我不知道它们与哪个股票相关。

//@version=4
//42quants.com
//@42piratas

study("Grid Bots Screening",overlay=true)

// INPUTS

res = input(type=input.resolution,defval="60",title="Resolution")
lookBack = input(title="Lookback",type=input.integer,defval=24,minval=2)
range = input(title="Upper & Lower Range %",defval=25,minval=10)

screenList  = input(false,"═════════ Screening ════════")
s01 = input('BINANCE:BTCUSDT',type=input.symbol)
s02 = input('BINANCE:ETHBTC',type=input.symbol)
s03 = input('BINANCE:XRPBTC',type=input.symbol)
s04 = input('BINANCE:LTCBTC',type=input.symbol)
s05 = input('BINANCE:BCHBTC',type=input.symbol)

s06 = input('BINANCE:LINKBTC',type=input.symbol)
s07 = input('BINANCE:ADABTC',type=input.symbol)
s08 = input('BINANCE:DOTBTC',type=input.symbol)
s09 = input('BINANCE:BNBBTC',type=input.symbol)
s10 = input('BINANCE:XLMBTC',type=input.symbol)

s11 = input('BINANCE:SNXBTC',type=input.symbol)
s12 = input('BINANCE:XMRBTC',type=input.symbol)
s13 = input('BINANCE:EOSBTC',type=input.symbol)
s14 = input('BINANCE:XEMBTC',type=input.symbol)
s15 = input('BINANCE:WBTCBTC',type=input.symbol)

s16 = input('BINANCE:TRXBTC',type=input.symbol)
s17 = input('BINANCE:XTZBTC',type=input.symbol)
s18 = input('BINANCE:COMPBTC',type=input.symbol)
s19 = input('BINANCE:FILBTC',type=input.symbol)
s20 = input('BINANCE:MKRBTC',type=input.symbol)

// INDICATORS & VARIABLES

var upperLimitLine = line.new(na,na,color=color.red,width= 3,extend=extend.none)
var lowerLimitLine = line.new(na,color=color.black,extend=extend.none)
var upperRangeLine = line.new(na,color=color.blue,width= 2,extend=extend.none)
var lowerRangeLine = line.new(na,color=color.green,extend=extend.none)

var range_corr = 100/range // the error was here

screenerFunc() => 
    
    highestHigh = highest(high,lookBack)
    lowestLow = lowest(low,lookBack)
    
    xAxisStartsAt = bar_index[lookBack]
    xAxisFinishesAt = bar_index
    
    upperLimit = highestHigh
    lowerLimit = lowestLow
    
    upperRange = highestHigh - ((highestHigh - lowestLow)/range_corr) 
    lowerRange = ((highestHigh - lowestLow)/range_corr) + lowestLow
    
    HighAboveUpperRange = high > upperRange
    LowBelowLowerRange = low < lowerRange
    
    occurrencesAboveTotal   = sum(HighAboveUpperRange ? 1 : 0,lookBack)
    occurrencesAboveSecondHalf = sum(HighAboveUpperRange ? 1 : 0,lookBack/2)
    occurrencesAboveFirstHalf  = occurrencesAboveTotal - occurrencesAboveSecondHalf
    
    occurrencesBelowTotal   = sum(LowBelowLowerRange ? 1 : 0,lookBack)
    occurrencesBelowSecondHalf = sum(LowBelowLowerRange ? 1 : 0,lookBack/2)
    occurrencesBelowFirstHalf  = occurrencesBelowTotal - occurrencesBelowSecondHalf
    
    // SCREENING
    
    triggerA = occurrencesAboveFirstHalf >= 1 ? true : false
    triggerB = occurrencesAboveSecondHalf >= 1 ? true : false
    triggerC = occurrencesBelowFirstHalf >= 1 ? true : false
    triggerD = crossunder(low,lowerRange)
    
    triggerA and triggerB and triggerC and triggerD

c01 = security(s01,res,screenerFunc())
// c02 = security(s02,screenerFunc())
// c03 = security(s03,screenerFunc())
// c04 = security(s04,screenerFunc())
// c05 = security(s05,screenerFunc())

// c06 = security(s06,screenerFunc())
// c07 = security(s07,screenerFunc())
// c08 = security(s08,screenerFunc())
// c09 = security(s09,screenerFunc())
// c10 = security(s10,screenerFunc())

// c11 = security(s11,screenerFunc())
// c12 = security(s12,screenerFunc())
// c13 = security(s13,screenerFunc())
// c14 = security(s14,screenerFunc())
// c15 = security(s15,screenerFunc())

// c16 = security(s16,screenerFunc())
// c17 = security(s17,screenerFunc())
// c18 = security(s18,screenerFunc())
// c19 = security(s19,screenerFunc())
// c20 = security(s20,screenerFunc())

// PAINTBRUSH

// line.set_xy1(upperLimitLine,xAxisStartsAt,upperLimit)
// line.set_xy2(upperLimitLine,xAxisFinishesAt,upperLimit)

// line.set_xy1(lowerLimitLine,lowerLimit)
// line.set_xy2(lowerLimitLine,lowerLimit)

// line.set_xy1(upperRangeLine,upperRange)
// line.set_xy2(upperRangeLine,upperRange)

// line.set_xy1(lowerRangeLine,lowerRange)
// line.set_xy2(lowerRangeLine,lowerRange)

plotchar(screenerFunc())

// ALERTS
alertcondition(c01,title="Alert",message="Alert!")