Detect other arguments

Hello, I’m making a discord bot. And I have added a command. In this command, bot detects first argument and other argument. Here my code:

const firstArgument = Arguments [0]
const otherArguments = Arguments.slice ().join (' ') - firstArgument

if (!firstArgument) Message.channel.send ('You must type more arguments than 1.')

I type 2 arguments, but it errors You must type more arguments than 1.
How can I fix this?

I may do a mistake at translating to English, if true, sorry.

Hello, can you show the full code for the command and tell me what arguments is defined as!

const Printer = require ('fs')
const Accounts = JSON.parse (Printer.readFileSync ('./Bot/Database/Accounts.json', 'utf8'))
const matchAccount = JSON.parse (Printer.readFileSync ('./Bot/Database/Match Account.json', 'utf8'))
exports.Run (Bot, Message, Argument, Permission, Time, Error) => {

const User = Argument [0]
const findUser = mathAccount [User]
const Text = Argument.slice ().join (' ') - User
const Author = Message.author
const Account = Account [Author.id]

const messageNotification = new RichEmbed ()
.setColor ('#1f1fff')
.setTitle (`There is a message from ${User}!`)
.setDescription (Text)

if (Account) {
if (!Text || !User) {
if (!Yazı) Error.setDescription ('Type a text.')
if (!Kişi) Error.setDescription ('Type tag of an user. ')
Message.channel.send (Error)
} else {
     if (Text.length > 1) {
       Message.channel.send (
       new RichEmbed ()
      .setColor ('#000000')
         .setDescription ('The message has sent!')
     )
 
 Bot.users.get (findUser).send (messageSent)
     } else {
     Error.setDescription ('The WHAT?')
     Message.channel.send (Error)
     } 
  }
 } else {
  Error.setDescription ('You must create an account for this.')
Message.channel.send (Error)
 }
}

exports.Config = {
 enabled: true,
 guildOnly: true,
 Aliases: ['message'],
 permLevel: 0
}

exports.Info = {
 İsim: 'Send Message'
}```