How to choose a widget from constructor script?

[Gen_X]

Hi.
I have an actor where is choosable material and audio, but I don’t know how to make choosable the widget.
I tried many things in the constructor scrip without results.
Does anybody knows how to do this?
I attach screen capture of constructor script and event graph.

Constructor script

Event graph

[Freedman753 (Freedman Jones)]

You can choose what type of feature it will be discrete, continuous or string. We can see the new dataset with Data Table widget bluestacks