Apply filter query to calculated data from Flexmonster Data Server

Hi, team!

I have started flexmonster data server and connected my flexmonster client app to it.  After that I am trying to apply the following filter query (I want to get top 10 rows):

"query": {
    "top": 10
}

and it does not work. I still see all the rows.  If i apply query like this:

"query": {
    "greater": 120
}

it works as expected.

So for unknown reason 'greater' works, but 'top' does not for the data that is fetched from flexmonster data server.

But both of this filter queries work if i apply them to data that is fetched from JSON, like here:

https://jsfiddle.net/ch71tw3f/

On screenshots you can see my slice object and the result i get in both cases: with 'greater' query and with 'top' query