Expert Advisor based on iRSIONARRAY

help me create an expert advisor with the iRSIonarray indicator. Here is the indicator's mql4 code:

//+------------------------------------------------------------------+

//|                                                  iRSIONARRAY.mq4 |

//|                        Copyright 2019, MetaQuotes Software Corp. |

//|                                             https://www.mql5.com |

//+------------------------------------------------------------------+

#property copyright "Copyright 2019, MetaQuotes Software Corp."

#property link      "https://www.mql5.com"

#property version   "1.00"

#property strict

#property indicator_separate_window

#property indicator_minimum    0

#property indicator_maximum    100

#property indicator_buffers 2

#property indicator_plots   1

#property indicator_level1     30.0

#property indicator_level2     70.0

#property indicator_levelcolor clrRed

#property indicator_levelstyle STYLE_DOT

//--- plot RSIOnArray

#property indicator_label1  "RSIOnArray"

#property indicator_type1   DRAW_LINE

#property indicator_color1  clrBlack

#property indicator_style1  STYLE_SOLID

#property indicator_width1  1

//--- indicator buffers

double         RSIOnArrayBuffer[];

double         OSMABuffer[];

input int BarsToCompute = 1000000;

input int OSMAFastPer = 12, OSMASlowPer = 26, OSMASignalPer = 9;

input int RSIPer = 14;

//+------------------------------------------------------------------+

//| Custom indicator initialization function                         |

//+------------------------------------------------------------------+

int OnInit()

  {

//--- indicator buffers mapping

   SetIndexBuffer(0,RSIOnArrayBuffer);

   SetIndexBuffer(1,OSMABuffer);

//---

   return(INIT_SUCCEEDED);

  }

//+------------------------------------------------------------------+

//| Custom indicator iteration function                              |

//+------------------------------------------------------------------+

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 limit = MathMin(BarsToCompute,MathMin(rates_total-1,rates_total-prev_calculated));

   for (int i=limit; i>=0; i--)

   {

      OSMABuffer[i] = iOsMA(_Symbol,_Period,OSMAFastPer,OSMASlowPer,OSMASignalPer,PRICE_CLOSE,i);

      RSIOnArrayBuffer[i] = iRSIOnArray(OSMABuffer,0,RSIPer,i);

   }

   return(rates_total);

  }

//+------------------------------------------------------------------+

Take profit = 30

Stop loss = 20

The lot = 0.01

We will use for the positions taken the RSI curve of the indicator above.

    Checklist for buying:

- H4, RSI> 70

- M30, RSI make a first peak on the line of 70 then a first trough on the line of 30

- H4, RSI is always> 70

- Position statement in M30.

Note:

- Do not take a long position if in step 4 the RSI < 70

- The checklist is valid if RSI > 70 in step 1 and 2 at the same time.  

  Checklist for selling:

- H4, RSI <30

- M30, RSI make a first dip on the line of 30 then a first vertex on the line of 70

- H4, RSI is always <30

- Position statement in M30.

Note:

- Do not take a short position if in step 4 the RSI > 30

- The checklist is valid if RSI < 30 in step 1 and 2 at the same time.

Do not forget to put the function that allows you to perform the backtest.

Thank you