How Edit Box Pokemon in Hex Editor

[XD_Lele]

For curiousity and be able to contribute someday with the project, I would like to understand how can I edit box pokemon in hex editor. For example in pokemon X, I used 

and

I tried to change de offsets: start 27A00  Length 34AD0 = Box Data (31 Boxes, 30 Slots, 232 bytes each). Nothing. Do I need decrypt or something like that? How can I decrypt? 

[XD_Lele]

i found a way: pkhex can save encrypted pokemon file. Then put this in correct offset save file