[LetsOWN[PL]]

So as above.
If you have created & connected to MySQL db, you can perform queries which will add values into columns/tables.
If you need help with MySQL database, head over here:
https://sampwiki.blast.hk/wiki/MySQL

If you'll have basic knowlege of MySQL (or if you have already), then you can create query to mysql base from

pawn Код:

[dUserSetINT(PlayerName2(playerid)).("level",0);

And it should look somehow like this

pawn Код:

format(query, sizeof(query), "Update table_name Set level = %d Where PlayerName = %s", level, PlayerName2(playerid));

or somethink like this. I dunno how You have wroten your script, so from this level it is all what I can say to you.
Maybe someone other here will guide you better.

Greetz,
LetsOWN