The video is out of date - the instances array must contain a list of objects. There are two special keys available on those objects - instanceStyle and instancePosition, which allow you to customize the style and flex position props of individual views in the repeater. Since the videos were recorded, we fixed the behavior of the ‘Add array element’ shortcut on the top level (instances) to automatically insert a new object with the ‘correct’ property shape. To add more instances, just use the + symbol on instances.
If you want to add more keys (to specify additional parameters on the views), use the '+` symbol on the object:
