cmd_virtualitem

command: /virtualitem

quick ref:

/virtualitem [@playername] [add|remove|get] [item_id]

description:

add, remove or get a certain virtual item to a given player
@param [@playername]: default to trigger entity. 
@param [add|remove|get]: 
@param item_id : item_id or name
e.g.
/virtualitem add quest1111
/virtualitem remove quest1111