Unable to set repeater data (Cannot set properties of undefined)

I am trying to set a repeater with some data:

This gives me the following error in console:

Can anyone shed some light as to how to debug further and ultimately fix my error?

Did you hide the Question List component or some of its parents in any way?

Well, yes! I am trying to populate with data before making them visible. Do I have to revert this, so that I populate AFTER making them visible?

Yes. Or you could use binding. Bind your repeater to some property of Page Data(for example), and populate it, in that case, you will haven’t this error.

Aha… Good, I’ll try that! :slight_smile: