I am testing the "public Example Random Demo" questionnaire posted on the Questionnaire Designer on my Android.
It is NOT displaying the selected person. What is the problem with it?
Tom, you have started with the statement that a public questionnaire dedicated as an example of random selection is not displaying the selected person. Upon checking we find that the example is perfectly fine and working.
You clarify that the problem is not with the public example, but with your questionnaire in which you "tried to replicate" this approach. We don't know what you actually did and how your replica is similar or dissimilar to the public example.
You have received error messages. Without knowing your questionnaire it's anybody's guess what they are and how to fix them. However, in the context of your questionnaire that you are seeing on the screen in front of you, it should make perfect sense.
Broadly: a syntax error means that you wrote an expression that the program can't understand.