Minecraft Spigot plugin make invisibility when sneaking?

I recently started programming with the Minecraft plugin. But I have no idea how I become invisible when I sneak. Can you help me?

I don't know how plugins work, but I can tell you the commands if you want

Same, that's almost easier with commands than with plugins

You can do that

PlayerToggleSneakEvent
Look at.

I've already tried. Somehow doesn't work.

Have you already checked whether the event will be carried out at all?

I just realized that you have to register the event in the main class.

How does it work?

Bukkit.getPluginManager (). RegisterEvents (listener, plugin);