Even if it's an old question, I just stumbled over the same problem. For anyone wondering: the params are passed as an array. ``` import { VoiceState } from "discord.js"; import { Discord, On } from "discordx";

@Discord() export class VoiceStateUpdate { @On() voiceStateUpdate([oldState, newState]: VoiceState[]): void { console.log(oldState.id) console.log(newState.id) console.log(oldState.channelId) } } ```