Lava Energy Control DRW20 FTB Minecraft

ienergylevel=0
net = peripheral.wrap("back")
nmonitor = peripheral.wrap("left")
ienergymax = 1990000
imonitorx = 0
imonitory = 0
netitems = peripheral.getNames()
index = 0
names = ""
lavalevel= 0
ienergypercentage = 0
ilavapercentage = 0
contador1 = 0
contador2 = 0
contador3 = 0
engines = {}
drums = {}
cells = {}

function initializate()

 for index,names in pairs(netitems) do
  if(string.find(names,"drum")) then
    drums [contador1]= names
    contador1 = contador1 + 1
  elseif(string.find(names,"cell")) then
    cells [contador2]= names
    contador2 = contador2 + 1

  elseif(string.find(names,"dynamo")) then
    engines[contador3]=names
    contador3 = contador3 + 1
  end
 end

 nmonitor.clear()
 nmonitor.setTextScale(2)
 imonitorx,imonitory =nmonitor.getSize()
end


function getvalues()
  lavalevel = 0
 for index,names in pairs(drums) do
    if nil ~= net.callRemote(names,"getTankInfo")[1].contents then
       lavalevel = lavalevel +  net.callRemote(names,"getTankInfo")[1].contents.amount
    end
 end
 for index,names in pairs(cells) do
   ienergylevel = net.callRemote(names,"getEnergyStored")
 end

ienergypercentage = math.floor((ienergylevel*100)/ienergymax)
ilavapercentage = math.floor((lavalevel*100)/((contador1+1)*256000))
end

function enginecontrol(control)

 if control then
    for index,names in pairs(engines) do
        net.callRemote(names,"setRedstoneControl","DISABLED")
    end
 else
    for index,names in pairs(engines) do
        net.callRemote(names,"setRedstoneControl","High")
    end
 end
end



function mastercontrol()
 if (ienergylevel<ienergymax and ilavapercentage>=10 ) then
   enginecontrol(true)
   print("Nivel de energia: ",ienergylevel)
   print("Nivel de lava: ",lavalevel)
 else
   enginecontrol(false)
   print("Nivel de energia: ",ienergylevel)
   print("Nivel de lava: ",lavalevel)
 end
end

function monitor()
 buffer = "Energy Level: " .. tostring(ienergypercentage) .. "%"
 nmonitor.setCursorPos((imonitorx/2)-(string.len(buffer)/2)+2,(imonitory/2)-1)
 nmonitor.write(buffer)

 buffer = "Lava Level: " .. tostring(ilavapercentage) .. "%"
 nmonitor.setCursorPos((imonitorx/2)-(string.len(buffer)/2)+2,(imonitory/2)+1)
 nmonitor.write(buffer)
end

initializate()
while(true) do
    sleep(.1)
    getvalues()
    mastercontrol()
    monitor()
end