Holo Trans Lua

holo = require("component").hologram;
fs = require("filesystem");

exists = function(i,Aar)
   for k,v in pairs(Aar) do
      if k == i then retun true end
   end
   return false
end

while true do
answer = io.read()
file = io.open(answer)
if(file == nil)
   print("File was not detected!")
else
   print("Start Initialize...")
   paint = {}
   input = file:read("*a")
   minx = 1
   miny = 1
   minz = 1
   minnumber = 1
   x1 = 1
   y1 = 1
   z1 = 1
   print("Initialize succsessful!\nStart converting File...")
   for i = 1, string.length(input)
      vartemp = string.sub(input,i,i)
      if vartemp == "x" then
         minx = i
      elseif vartemp == "y" then
         x1 = tonumber(string.sub(input,minx+1,i-1))
         miny = i
      elseif vartemp == "z" then
         y1 = tonumber(string.sub(input,miny+1,i-1))
         minz = i
      elseif vartemp == "|" then
         z1 = tonumber(string.sub(input,minz+1,i-1))
         minnumber = i
      elseif vartemp == ";" then
         if exists(x1,paint) then
            if exists(z1,paint[x1]) then
               paint[x1][z1][y1] = tonumber(string.sub(input,minnumber+1,i-1))
            else
               paint[x1][z1] = {}
               paint[x1][z1][y1] = tonumber(string.sub(input,minnumber+1,i-1))
            end
         else
            paint[x1] = {}
            if exists(z1,paint[x1]) then
               paint[x1][z1][y1] = tonumber(string.sub(input,minnumber+1,i-1))
            else
               paint[x1][z1] = {}
               paint[x1][z1][y1] = tonumber(string.sub(input,minnumber+1,i-1))
            end
         end

      end
   end
   print("File converted, start printing...")
      for k,v in pairs(paint) do
         for k1,v1 in pairs(v)
            for k2,v2 in pairs(v1)
               holo.set(k,k1,k2,v2)
            end
         end
      end
   paint("Printed!")
end