How to add and subtract xp from a player

[20Spaces]

Hello! This is kinda a stupid and basic question but I can't find the answer for the life of me. So I want to add and subtract xp from a player
I tried:

add 10 to player's xp

However I think this requires the TuSke add-on and I would prefer to use Skript syntax if this exist. I would also prefer to subtract Levels from the player instead of just XP

 

[NixTer]

Experience (Type) - Skript

Experience points. Please note that Bukkit only allows to give XP, but not remove XP from players. You can however change a player's level and level progress freely.

skripthub.net

You can't remove xp but you can remove levels

give 10 xp to player
remove 4 levels from player etc

 

[20Spaces]

Experience (Type) - Skript

Experience points. Please note that Bukkit only allows to give XP, but not remove XP from players. You can however change a player's level and level progress freely.

skripthub.net

You can't remove xp but you can remove levels

give 10 xp to player
remove 4 levels from player etc

The parser says this syntax is wrong?

 

[NixTer]

The parser is several skript versions outdated. That being said, I've sent the wrong doc link!

Level (Expression) - Skript

The level of a player.

skripthub.net