#property copyright "sample"
#property link      "http://sample.sample"
#property version   "1.00"
#property indicator_buffers 7
#property strict
#property indicator_chart_window			// or indicator_separate_window
#property indicator_plots   3				//How Many Plots

input int Periods=13;
double         MyBuffer[];
int OnInit()
{
   SetIndexBuffer(0,MyBuffer,INDICATOR_DATA);
   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 first=Periods+2;    if(prev_calculated > 0 ) { first = prev_calculated-1; }

	for(int bar = 0; bar < rates_total-first; bar++){					// main loop of the calculation
		MyBuffer[bar]= (2 / Periods);
	}
	return(rates_total);
}