Dual Indicator Reversal Trading Strategy

/*backtest
start: 2023-08-25 00:00:00
end: 2023-09-24 00:00:00
period: 3h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=4
////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 11/07/2019
// 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
// The Commodity Channel Index (CCI) is best used with markets that display cyclical or 
// seasonal characteristics, and is formulated to detect the beginning and ending of these 
// cycles by incorporating a moving average together with a divisor that reflects both possible 
// and actual trading ranges. The final index measures the deviation from normal, which indicates 
// major changes in market trend.
// To put it simply, the Commodity Channel Index (CCI) value shows how the instrument is trading 
// relative to its mean (average) price. When the CCI value is high, it means that the prices are 
// high compared to the average price; when the CCI value is down, it means that the prices are low 
// compared to the average price. The CCI value usually does not fall outside the -300 to 300 range 
// and, in fact, is usually in the -100 to 100 range.
//
// 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

CCI(FastMA, SlowMA) =>
    pos = 0
    xCCI = cci(close, 10)
    xSMA = sma(xCCI,SlowMA)
    xFMA = sma(xCCI,FastMA)
    pos := iff(xSMA < xFMA , 1,
	         iff(xSMA > xFMA, -1, nz(pos[1], 0))) 
    pos

strategy(title="Combo Strategy 123 Reversal & CCI", shorttitle="Combo", overlay = true)
Length = input(14, minval=1)
KSmoothing = input(1, minval=1)
DLength = input(3, minval=1)
Level = input(50, minval=1)
//-------------------------
FastMA = input(10, minval=1)
SlowMA = input(20, minval=1)
reverse = input(false, title="Trade reverse")
posReversal123 = Reversal123(Length, KSmoothing, DLength, Level)
posCCI = CCI(FastMA, SlowMA)
pos = iff(posReversal123 == 1 and posCCI == 1 , 1,
	   iff(posReversal123 == -1 and posCCI == -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 )