custom helmet example script fix

[OGContent]

(So the first thing the preset script fix because this preset script allows a dupe, if ur helmet slot was air and you tried to put in the custom helmet the helmet slot will become ur custom helmet + ur cursor would still have the custom helmet

# Allows specified items to be used as helmets for survival players (Minecraft 1.9 recommended).
#

aliases:
    custom helmets = iron block, gold block, diamond block # Change this to anything you'd like

on inventory click:
    inventory action is place all or nothing
    cursor slot of player is custom helmets # Check if item is allowed as helmet
    event-slot is helmet slot of event-player # Check that player clicked the helmet
    cancel the event
    set {_old helmet} to helmet of player # Store old helmet
    set helmet of player to cursor slot of player # Set new helmet to item in player's cursor
    set cursor slot of player to {_old helmet} # Set player's cursor to old helmet, possibly air

on right click:
    tool of player is custom helmets
    helmet of player is air
    cancel the event
    set helmet of player to tool of player
    set tool of player to air

so the last 3 lines of the on inventory click: is the issue and it should be updated to

    set {_old helmet} to helmet of player # Store old helmet
    if event-slot is air: # Checks if the helmet slot is air
        set helmet of player to cursor slot of player # Set new helmet to item in player's cursor
        set cursor slot of player to air # Will set player's cursor to air
        stop #Stops the code
    set helmet of player to cursor slot of player
    set cursor slot of player to {_old helmet} # Set player's cursor to old helmet

edit: the fix didn't work after 1 restart ;/

[TPGamesNL]

2nd is duplicate of #3899