Data source -- changed state of store is not passed to remote method

Hi,

I have simple data source and its loading action changes state of store. Problem is that to sources method `remote` is passed old state without change made by loading action.

How should by handled loading action in store?

```
onLoading() {
this.setState({key: value})
}
```

or

```
onLoading() {
this.key = value;
}
```

Both does not work for me.

Thank you.