PEER_ID_INVALID and business bot

[alexey-sh]

I have Premium Telegram account and created Business Telegram bot. So it is able to receive notifications from all my chats, but when I try to send message, it throws the following error

Fail RPCError: 400: PEER_ID_INVALID (caused by InvokeWithBusinessConnection)
    at RPCMessageToError (/Users/alexeysh/dev/tg-api-no-bot/node_modules/telegram/errors/index.js:28:12)
    at MTProtoSender._handleRPCResult (/Users/alexeysh/dev/tg-api-no-bot/node_modules/telegram/network/MTProtoSender.js:546:58)
    at MTProtoSender._processMessage (/Users/alexeysh/dev/tg-api-no-bot/node_modules/telegram/network/MTProtoSender.js:476:15)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async MTProtoSender._recvLoop (/Users/alexeysh/dev/tg-api-no-bot/node_modules/telegram/network/MTProtoSender.js:424:17) {
  code: 400,
  errorMessage: 'PEER_ID_INVALID'
}

this is my code

   console.log('started', await client.start({
        botAuthToken: BOT_TOKEN,
    }));

    client.addEventHandler(async (update: Api.TypeUpdate) => {
        if (update instanceof UpdateBotNewBusinessMessage) {
            try {
                const result = await client.invoke(new Api.InvokeWithBusinessConnection ({
                    connectionId: update.connectionId,
                    query: new Api.messages.SendMessage({
                        // @ts-ignore
                        peer: update.message.fromId,
                        message: "Hello there!",
                        // @ts-ignore
                        // sendAs: update.message.peerId, // does not help
                    })
                }));
                console.log('ok', result);
            } catch (e) {
                console.error('Fail', e);
            }
        }
    });

Business users can connect Telegram bots that will process and answer messages on their behalf. This allows businesses to seamlessly integrate any existing tools and workflows, or add AI assistants that manage their chats.

The documentation says it is possible, but it seems not to be.