Translate spine script (tradingview) to mql indicator (meta trader 4)

External question — Stack Overflow Stack Exchange Author: user15684246 Original post: https://stackoverflow.com/questions/67152088 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. I would like to convert a Pine script from trading view script to mq4 indicator for meta trader 4. Here is the script to translate from trading view Pine script: rsiLength = input(title="RSI Length", type=input.integer, defval=14) lbLength = input(title="Look Back Length", type=input.integer, defval=5) avgLength = input(title="Average Length", type=input.integer, defval=8) drawSig = input(title="Signal On/Off?", type=input.bool, defval=false) sigLength = input(title="Signal Length", type=input.integer, defval=6) src = input(title="Source", type=input.source, defval=close) ob = input(title="Over Bought", type=input.integer, defval=80) os = input(title="Over Sold", type=input.integer, defval=20) avgRSI(rsiLength, lookBack, avgLen) => rsi = rsi(src, rsiLength) rsiLowest = lowest(rsi, lookBack) rsiHighest = highest(rsi, lookBack) avgRSILow = sma(rsi - rsiLowest , avgLen) avgHiLow = sma(rsiHighest - rsiLowest, avgLen) return = 100 / (.01 + avgHiLow / avgRSILow) return rsi = avgRSI( rsiLength, lbLength, avgLength ) plot(series=rsi, title="StochRSI", color=color.red, transp=0) signal = drawSig ? sma(rsi, sigLength) : na plot(series=signal, title="StochRSI Signal", color=color.orange, transp=0) h1 = hline(price=ob, title="OB") h2 = hline(price=os, title="OS") fill(h1, h2) I don't understand this two lines: avgRSILow = sma(rsi - rsiLowest , avgLen) avgHiLow = sma(rsiHighest - rsiLowest, avgLen) This is my code to metatrader 4: double lineBuffer[]; int rsiLength = 5; int lbLength = 5; int avgLength = 8; int sigLength = 6; int OnInit() { SetIndexBuffer(0, lineBuffer); return(INIT_SUCCEEDED); } int OnCalculate(const int rates_total, const int prev_calculated, const datetime &time[], const double &open[], const double &high[], const double &low[], const double &close[], const long &tick_volume[], const long &volume[], const int &spread[]) { int uncalculatedBar = rates_total - prev_calculated; for(int i = 0; i < uncalculatedBar; i++){ double rsi = iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, i); double rsiLowest = lowestRSI(lbLength, i); double rsiHighest = highestRSI(lbLength, i); double avgRSILow = lowAverageRsi(avgLength, i, rsiLowest); double avgHiLow = lowHighRsiAverage(avgLength, rsiLowest, rsiHighest); lineBuffer[i] = 100 / (.01 + avgHiLow / avgRSILow); } return(rates_total); } // Return lowest rsi value for the last x values (->loopback) from a specific index (->start) double lowestRSI(int loopback, int start) { double lowest_rsi = iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, start); for(int i = start + 1; i <= start + loopback; i++){ if(iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, i) < lowest_rsi){ lowest_rsi = iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, i); } } return lowest_rsi; } // Return highest rsi value for the last x values (->loopback) from a specific index (->start) double highestRSI(int loopback, int start) { double highest_rsi = iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, start); for(int i = start + 1; i <= start + loopback; i++){ if(iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, i) > highest_rsi){ highest_rsi = iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, i); } } return highest_rsi; } // Calculate rsi average for last x values (-> loopback) minus lowestRsi double lowAverageRsi(int loopback, int start, double lowestRsi) { double low_average_rsi = 0; for(int i = start; i < start + loopback; i++){ low_average_rsi = low_average_rsi + ((iRSI(NULL, NULL, rsiLength, PRICE_CLOSE, i) - lowestRsi) / loopback); } return low_average_rsi; } // Calculate avergage for last x values between two values double lowHighRsiAverage(int loopback, double lowestRsi, double highestRSI) { double low_high_rsi_average = 0; for(int i = 0; i < loopback; i++){ low_high_rsi_average = low_high_rsi_average + ((highestRSI - lowestRsi) / loopback); } return low_high_rsi_average; } I'm stuck, I don't know what to do, if you can help me that would be great