DhtmlxDataProcessor onAfterUpdateFinish not working

Hi, I’m migrating from 3.6.2 to 4.0.3 and i have a problem with the dataprocessor.
After load the grid is not calling the “onAfterUpdateFinish”.
I don’t see any documentation impacted on this method, can you help me please?

Functionality of this event was not changed in the latest update.
It must be possible to use it like next

dp.attachEvent("onAfterUpdateFinish", function(){ //some code })