Stuck in making a new OTItemEditor

[Luiz Vitor]

I am making a new OTItemEditor but I am stuck.
I have almost copied the code of reading otb.

items.otb node(item 103):

fe 01 00 00 00 02 10 02 00 67 00 11 02 00 67 00 20 10 00 9e 51 2e fd fd b6 93 15 ee 26 b3 82 ba 04 80 09 33 21 02 00 81 00 14 02 00 6e 00 ff

fe - begin node
01 - group type
00 00 00 02 - flags
10 / 02 00 / 67 00 - serverId/datasize/value
11 / 02 00 / 67 00 - clientId/datasize/value
20 / 10 00 / 9e 51 2e fd fd b6 93 15 ee 26 b3 82 ba 04 80 09 - spriteHash/datasize/values

when is there it reads:
33 / 21 02 / 00 81 00 14 02 00 6e 00 ff .....

should be (dont know where 33 comes from):
21 / 02 00 / 81 00
14 / 02 00 / 6e 00
ff - end of node

The most impressive is that all editors I've downloaded load it correctly, even reading the 33




edit: solved, the problem was the way it reads, fd is special character to read fd, fe and ff not as begin/end of node
I DONT UNDERSTAND WHY THEY MADE THIS SUX STRUCTURE TO OTB