How to make the bot react to messages in a conversation?

Question

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I'm trying to get a bot written in Node.js to respond to commands in conversations. For example, someone wrote "the chance that ...", and he will answer.
I use vk-io 3.2.0, I need to make it so that when I write a message in a conversation, longpoll reacts to it. When I write , only those messages that I write to the bot in the LAN are determined, and not in a general conversation. Maybe there is some kind of event that determines the messages in the conversation? vk.longpoll.on('message', (message) => {}

Answer 1

in a conversation, the bot must have full access to the correspondence