discord js delete message after time

1message.reply('Invalid command')
2  .then(msg => {
3                msg.delete({ timeout: 20000 /*time unitl delete in milliseconds*/});
4            })
5  .catch(/*Your Error handling if the Message isn't returned, sent, etc.*/);

1message.delete()

1message.channel.send("Hello World!").then(msg=>msg.delete({timeout:"2000"/*Time until delete in milliseconds*/})