Settings={
sec ="ind2",  --идентификатор инструмента 2-го графика
Name = 'nk_ind',
}
-------
function OnCalculate(i)
   if i==Size() then
      local N=getNumCandles (Settings.sec) ;
      if N>3 then
         local t=getCandlesByIndex(Settings.sec,0,N-3,3); --последние 3 свечи 2-го графика
         local Hi2,Hi1,Hi0=t[0].high,t[1].high,t[2].high;
      --------------------------
         t=getCandlesByIndex(Settings.sec,0,0,3);   --первые 3 свечи 2-го графика
         local H1,H2,H3=t[0].high,t[1].high,t[2].high;

         message("1="..H(1)..",2="..H(2)..",3="..H(3).."....,i-2="..H(i-2)..",i-1="..H(i-1)..",i="..H(i).."\n"..
         "1="..H1..",2="..H2..",3="..H3..",i-2="..Hi2..",i-1="..Hi1..",i="..Hi0.."\n");
      end
   end
   return
end
-----
function Init()
 Settings.line={};
   Settings.line[1] =    {Name = "C",Color = RGB(0,255,0),      Type =2,Width = 2   };
   return 1;
end

Settings = {}
Settings.Name = '*Example'
Settings.line = 
{
    {
    Name = "Example",
    Color = RGB(0, 0, 0),
    Type = TYPE_LINE,
    Width = 2   
    }
}

local volumeBidCandles
local volumeAskCandles
local volumeBidPrice, volumeBidN, volumeBidName
local volumeAskPrice, volumeAskN, volumeAskName

function OnChangeSettings()

   message(
   "Изменились настройки: "   
   )

   Init()   

end


function Init()

   volumeBidCandles=0
   volumeAskCandles=0
      
   volumeBidN=0
   volumeAskN=0
      
   volumeBidPrice=nil
   volumeAskPrice=nil
        volumeBidCandles = getNumCandles("volumeBid")
   volumeAskCandles = getNumCandles("volumeAsk")
   
   
   
   volumeBidPrice, volumeBidN, volumeBidName=getCandlesByIndex("volumeBid", 0, 0, math.min(volumeBidCandles,volumeAskCandles))
   volumeAskPrice, volumeAskN, volumeAskName=getCandlesByIndex("volumeAsk", 0, 0, math.min(volumeBidCandles,volumeAskCandles))
   
   message(
   "Init: "   
   )
      

    return 1
   
end
 
function OnCalculate(index)

   if index==1 then

      Init()
   

      message(         
         "#volumeBidPrice " .. tostring(#volumeBidPrice).. "; \n"
         ..
         "#volumeAskPrice " .. tostring(#volumeAskPrice).. "; \n"
         ..
         "volumeBidPrice[volumeBidN-3].high " .. tostring(volumeBidPrice[volumeBidN-3].high).. "; \n"
         ..
         "volumeBidPrice[volumeBidN-2].high " .. tostring(volumeBidPrice[volumeBidN-2].high).. "; \n"
         ..
         "volumeBidPrice[volumeBidN-1].high " .. tostring(volumeBidPrice[volumeBidN-1].high).. "; \n"
         ..
         "volumeBidPrice[0].high " .. tostring(volumeBidPrice[0].high).. "; \n"
         ..
         "volumeBidPrice[1].high " .. tostring(volumeBidPrice[1].high).. "; \n"
         ..
         "volumeBidPrice[2].high " .. tostring(volumeBidPrice[2].high).. "; \n"
         ..
         "volumeAskPrice[volumeAskN-3].high " .. tostring(volumeAskPrice[volumeAskN-3].high).. "; \n"
         ..
         "volumeAskPrice[volumeAskN-2].high " .. tostring(volumeAskPrice[volumeAskN-2].high).. "; \n"
         ..
         "volumeAskPrice[volumeAskN-1].high " .. tostring(volumeAskPrice[volumeAskN-1].high).. "; \n"
         ..
         "volumeAskPrice[0].high " .. tostring(volumeAskPrice[0].high).. "; \n"
         ..
         "volumeAskPrice[1].high " .. tostring(volumeAskPrice[1].high).. "; \n"
         ..
         "volumeAskPrice[2].high " .. tostring(volumeAskPrice[2].high).. "; \n"
         )
   end   
   return 1
end