function convertHexaDec(word,mode)
  local offset = ""
  local result = 0
  local number = 0
  local n = 0
  if mode == nil then
    for i = 4 , 1 , -1 do
      offset = offset..string.format("%X",word:byte(i,i))
    end
  else
    offset = word
  end
  for i = #offset , 1 , -1 do
    if offset:sub(i,i) == "A" then
      number = 10
    elseif offset:sub(i,i) == "B" then
      number = 11
    elseif offset:sub(i,i) == "C" then
      number = 12
    elseif offset:sub(i,i) == "D" then
      number = 13
    elseif offset:sub(i,i) == "E" then
      number = 14
    elseif offset:sub(i,i) == "F" then
      number = 15
    else
      number = offset:sub(i,i)
    end
    result = result + number*16^n
    n = n + 1
  end
  return result
end