NPC saving information
 

I've seen on other servers where you can give npcs coins and they will remember how many coins you have given them as "credit" (not a banker). So i was wondering how i might get an npc to store other information, like a player's current level. I want to create an npc where a player can hail it and say "level" and it records their current level. Then should a glitch occur and they lose a bunch of levels just from 1 death, they can return to the npc and say "back" and it will look up their previous level and give it back to them via quest::level

Use quest_globals for that.

will value saved in quest global survive server reset/loging out?

It's in the database, so yes. Store in the quest_globals table with all the pertinent information.

ah good thank you =)