Get Thing-properties in a shapeservice

I made a ThingShape "Searchable.TS" which let me get all of my searchable things in a collection widget.

Now I want to show a little indicator wether the Thing is connected or not. So is there an option for me to write a Service in "Searchable.TS" which gets the Connected property of the belonging thing?

Something like:

-> Me.GetProperty("Connected")...