"doesn't have" Condition about skript

[Pilvinen]

Your code doesn't make any sense and that's why it doesn't work. But that being said - if it doesn't throw errors at you and fail your code gracefully when you try to load it then you have indeed found a bug that needs fixing.

You don't have any arguments defined in your command, that's why you can't refer to an argument in your code.

Your code should be, for example:

command /debugtest:
  trigger:
    if executor doesn't have iron ingot:
      send " DEBUG: You don't have iron ingots." to executor

Which works perfectly and detects whether or not the person who runs the command has or doesn't have iron ingots.

Or:

command /debugtest <player>:
  trigger:
    if arg 1 doesn't have iron ingot:
      send " DEBUG: %arg 1% doesn't have iron ingots." to executor
      send " DEBUG: You don't have iron ingots." to arg 1

Which also would seem to work perfectly.

Please read the documentation properly before making bug reports. You can find the docs here:
http://njol.ch/projects/skript/doc/

[bensku]

Which version of Minecraft are you running? It seems your server doesn't support main/off hand separation, i.e. it is not running Minecraft 1.9+.

Edit: Fixed in next release (tomorrow?) anyway.