Problem with displaying array or list returned by a web service

Issue: How to specify in VC that all the elements of an array or list returned by a web service should be displayed

Description:

I have created a web service getArray() that returns String[]. I have tested this web service and it works. I have added it in VC and dragged the getArray() method to the storyboard and created an output table. When testing the iView only the first element is displayed, not all the elements.

According to this post https://www.sdn.sap.com/irj/sdn/wiki?path=/display/vc/outputfieldnotseenas+array& there should be a "Add Fields" button when I click on Test Data Service, however I do not see it.

Help would be very much appreciated. Thank you.