rare sorting on a table

[Diego - Red Baires <diego_redbaires@...>]

Hi guys, i have this structure and i am getting a strange result. 

could anyone explain me why ?

PAUTAS = {

  [0] = {

    ID_PAUTA  = "GUILLE",

    REQ_FILES = {

  [0] = {FILENAME = "0-FILE1", MD5 = "0-MD5-1"},

      [1] = {FILENAME = "0-FILE2", MD5 = "0-MD5-2"},

  }

  },

  [1] = {

    ID_PAUTA  = "LICH",

    REQ_FILES = {

  [0] = {FILENAME = "1-FILE1", MD5 = "1-MD5-1"},

      [1] = {FILENAME = "1-FILE2", MD5 = "1-MD5-2"},

      [2] = {FILENAME = "1-FILE3", MD5 = "1-MD5-3"},

  }

  },

}

for i, pauta in pairs(PAUTAS) do

  print (i.."> "..pauta.ID_PAUTA);

  for k, req_file in pairs(pauta.REQ_FILES) do

    print(k.."  > "..req_file.FILENAME.." ("..req_file.MD5..")")

  end

end

i supposed to get this result:

0> GUILLE

0  > 0-FILE1 (0-MD5-1)

1  > 0-FILE2 (0-MD5-2)

1> LICH

0  > 1-FILE1 (1-MD5-1)

1  > 1-FILE2 (1-MD5-2)

2  > 1-FILE3 (1-MD5-3)

---------- BUT INSTEAD OF THAT, I ALWAYS GET THIS SORT (SWAP BETWEEN 2,1)

0> GUILLE

0  > 0-FILE1 (0-MD5-1)

1  > 0-FILE2 (0-MD5-2)

1> LICH

0  > 1-FILE1 (1-MD5-1)

2  > 1-FILE3 (1-MD5-3)

1  > 1-FILE2 (1-MD5-2)

ANY IDEA ?

thanks

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