Currently I'm unable to find a working solution. Let's say I have the following smartcontract:

```
contract Manufacturer {
    event LogNewOrder(string order);

    string[] public orders;

    function addOrder(string newOrder) public {
        orders.push(newOrder);
        emit LogNewOrder(newOrder);

        return;
    }
}

```

If a third party calls the method `addOrder(newOrder)`, the manufacturer should be informed about, because he must perform things. What is the best method with web3 to listen to events? If I do something like this:

```
instance.events.allEvents({ fromBlock: 0 })
.on('data', function(event){
    console.log(event);
})
.on('changed', function(event){
    console.log(event);
})
.on('error', console.error);

```

then nothing happens.