How do I pick the Object Instance that I taped on?

I'm using Event Scripting and I want to get the Instance that I taped on (with Touch).

I have a condition "On tap gesture on obj_interact". obj_interact is an Object Type with multiple instances, each having it's own Instance Variables that say what dialogue needs to be displayed.

I was able to change the text with

const txt = runtime.objects.Text.getFirstInstance(); txt.text="Test string";

So I know I can alter the text.

I then need to get the clicked Instance's Instance Variables and assign their value to the text. I tried with:

const pickedObj = runtime.object.obj_interact.getFirstPickedInstance();

But it doesn't work. How do I get it?