when mapping data to a screen, how could I do 'computed' result:
for example I want to map Adress ZipCode and Town in one place on the screen ?
as i can see you trying to access some array data so i assume you have list/grid component and want mapping to iterate it with data and some label inside. If it's true here is a solution:
Make link from $ response to grid/list-item component to iterate it.
Click "JS" button on this link.
Use following JS code:
//Where "firstName" and "secondName" is your db goal fields.
var name = data.firstName + "_" + data.secondName;
//Where "labelName" is needed label name.