Hello i have l2j pack and when reset server everything go back on start :/ how can fix it

Consider to make a bigger sentence than 8 words to explain your issue.

i download l2 tales pack and i compilatit and when i create a character and exp to the x level and i reset server everything go back to first time run server and characters too 

By reset, what do you mean ? Do you use the server option Shutdown or Restart option ? Or you crash the application ?

when i log to the game and exp to idk level 10 and close and start server and i have level 1 

If you just kill the Application (Gameserver.bat), then use shutdown to close your server, because the Application needs to do Save of database I guess..