Solved run command if i hold an item?

Hey! How can I run a command if I hold a stick or something else?
For example if a hold the stick, the command /help will be run.
Does something like $this->getServer()->runCommand()...exist?
Thanks!

PHP:

public function holdItem(PlayerItemHeldEvent $event) {
    if($event->getItem() instanceof Stick) {
         // Command Time!
         $this->getServer()->getCommandMap()->dispatch($event->getPlayer(), "help");
    }
}

Thank you very much, I will try it out! <3

Check the edit, that was some mistake!