Dual factor Quant Trading Strategy

/*backtest
start: 2023-11-29 00:00:00
end: 2023-12-06 00:00:00
period: 15m
basePeriod: 5m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=4
////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 28/04/2021
// This is combo strategies for get a cumulative signal. 
//
// First strategy
// This System was created from the Book "How I Tripled My Money In The 
// Futures Market" by Ulf Jensen, Page 183. This is reverse type of strategies.
// The strategy buys at market, if close price is higher than the previous close 
// during 2 days and the meaning of 9-days Stochastic Slow Oscillator is lower than 50. 
// The strategy sells at market, if close price is lower than the previous close price 
// during 2 days and the meaning of 9-days Stochastic Fast Oscillator is higher than 50.
//
// Second strategy
// Determining market trends has become a science even though a high number or people 
// still believe it's a gambling game. Mathematicians, technicians, brokers and investors 
// have worked together in developing quite several indicators to help them better understand 
// and forecast market movements.
//
// Developed by Modulus Financial Engineering Inc., the prime number oscillator indicates the 
// nearest prime number, be it at the top or the bottom of the series, and outlines the 
// difference between that prime number and the respective series.
//
// WARNING:
// - For purpose educate only
// - This script to change bars colors.
////////////////////////////////////////////////////////////
Reversal123(Length, KSmoothing, DLength, Level) =>
    vFast = sma(stoch(close, high, low, Length), KSmoothing) 
    vSlow = sma(vFast, DLength)
    pos = 0.0
    pos := iff(close[2] < close[1] and close > close[1] and vFast < vSlow and vFast > Level, 1,
	         iff(close[2] > close[1] and close < close[1] and vFast > vSlow and vFast < Level, -1, nz(pos[1], 0))) 
	pos

PrimeNumberOscillator(price, percent) =>
    res = 0.0
    res1 = 0.0
    res2 = 0.0
    for j = price to price + (price * percent / 100)
        res1 := j
	    for i = 2 to sqrt(price)
        	res1 := iff(j % i == 0 , 0, j)
            if res1 == 0 
                break
		if res1 > 0 
		    break
    for j = price to price - (price * percent / 100)
        res2 := j
	    for i = 2 to sqrt(price)
        	res2 := iff(j % i == 0 , 0, j)
            if res2 == 0 
                break
		if res2 > 0 
		    break
    res := iff(res1 - price < price - res2,  res1 - price, res2 - price)
    res := iff(res == 0, res[1], res)
    res
    
PNO(percent) =>
    pos = 0.0
    xPNO = PrimeNumberOscillator(close, percent)
    pos:= iff(xPNO > 0, 1,
           iff(xPNO < 0, -1, nz(pos[1], 0))) 
    pos

strategy(title="Combo Backtest 123 Reversal & Prime Number Oscillator", shorttitle="Combo", overlay = true)
line1 = input(true, "---- 123 Reversal ----")
Length = input(14, minval=1)
KSmoothing = input(1, minval=1)
DLength = input(3, minval=1)
Level = input(50, minval=1)
//-------------------------
line2 = input(true, "---- Prime Number Oscillator ----")
percent = input(5, minval=0.01, step = 0.01, title="Tolerance Percentage")
reverse = input(false, title="Trade reverse")
posReversal123 = Reversal123(Length, KSmoothing, DLength, Level)
posPNO = PNO(percent)
pos = iff(posReversal123 == 1 and posPNO == 1 , 1,
	   iff(posReversal123 == -1 and posPNO == -1, -1, 0)) 
possig = iff(reverse and pos == 1, -1,
          iff(reverse and pos == -1 , 1, pos))	   
if (possig == 1 ) 
    strategy.entry("Long", strategy.long)
if (possig == -1 )
    strategy.entry("Short", strategy.short)	 
if (possig == 0) 
    strategy.close_all()
barcolor(possig == -1 ? #b50404: possig == 1 ? #079605 : #0536b3 )