The Object Set integration in the Slate Platform tab is backed by the Object Set Service search endpoint. This endpoint in turn hits the underlying index in the Phonograph data store associated with the object type.
When you make a data change via an Action, there is a brief (normally less than 3s) delay before the changes are reflected in the index. They're immediately reflected if you access the modified object(s) by primary key.
So in Slate you can set up an Event "chain" based on the success event broadcast from the Action, through a Toast Widget with a 3-4s timer, to an event that triggers on w_toastWidget.didClose
-> s_myObjectSet.run
.
This should tell Slate to update the object set 4 seconds after the successful submission of the Action.
A future planned update to the Object storage infrastructure will provide a version of Actions that guarantees when the request returns successfully that the changes will already be reflected in search results.