XP editing

HI i please ntb edit on my minecraft server is non official version on this page : MineCube .::. Novinky
and ntbedit dont open my witrussss.dat
and with CE my level come back to normal

okay first of all it's NBT edit not ntb..
and be more specific..i think what your trying to say is it's not opening witrussss.dat??? What the fuck is that? Your minecraft world .dat file? No such thing..
I think your referring to your save file, looking at your MPGH name. This is what you do... (below)
Type %appdata%, click .minecraft, go to saves, pick your minecraft save world witrussss whatever, then click level.dat. That's the file you should be looking at.
And for the CE level.. to get your XP to stay infinite, you have to enter in 12499999999 in the values and freeze it. The next time you play it without CE on it's going to stay infinite.

IDK Know if you know this Dont use NotePadd Use Notepad ++ cause it sounds like your pretty new to this stuff witrusss

do you even have knowledge of minecraft editing/hacking @witrusss?

Try freezing the value at quite a high figure and then killing a mob to get exp. I'm pretty sure the exp value would only be saved if it was changed, and if that is the case then MC would have to know about it being changed.