How do i modify the stat play time with and without seven curses?
When i try to modify it through the stats .json it goes back to what it was, while the other stats if modified don't go back.
Is it being stored somewhere?

Single or multiplayer? I know that playerdate is stored differently for each of those.

but its best to wait for Aizistral to answer this question. I have never dealt with changing my times.

Understandble, singleplayer using lan to play with a friend, do you happen to know when he's gonna be able to?

saves/<world>/stats/<your_uuid>.json.
There you are looking for play_time_with_seven_curses and play_time_without_seven_curses stats, which record respective times in game ticks.

Taken from the pinned messages in the help-and-questions channel in the official discord.

yes, i found that, but when i try to modify the play_time_with_seven_curses or the play_time_without_seven_curses they go back, let's say my play_time_with_seven_curses is '30000', if i change it to '1000', when i join the world it goes back to '30000' same with the play_time_without_seven_curses but that doesn't happen with the normal stats killed by zombies for example

All I can do is bring this to his attention...
When he has the time to check this out I do not know.

When you play in singleplayer, the local player data is stored in the level.dat file.

i had to change it in the level.dat, player.dat and statistics.json all at the same time for it to change properly in singleplayer ,-,

This is no longer a problem, as the command '/setringtime' can do this operation properly.