Observe where the overlay is when you hide the target - it will be rendered orthogonally on the screen at that position.

There is no different that use 2DOverlayPosition or not, the augmentation appears in correct position. so what the different that i use 2DOverlayPosition? Thank you.

Yes - take a look at the same object in the CR sample.

Are your augmentations appearing in the correct position relative to the target?

i already do it, but i don't have any different with no use 2DOverlayPosition. it just create empty game object?

If you're trying to reconstruct the Unity Cloud Reco sample, the 2DOverlayPosition is just a GameObject that you create ( GameObject > Create Empty ) in your scene and give that name, also make it a child of the ARCamera. This object's transform will be used as the anchor position for the overlays.

Sorry My mistake, i'm forgot to put bookinformationprefab. I'm already show the book information. Now, I just want to run sample code with unity, just like in the video tutorial. But i cannot find 2dOverlayPosition, where i can find that? Thank you

The JSON formatted information returned from that URL defines which book sample to present. So if you've changed the URL, you'll need to copy the same information to that location as a file.

What are you trying to accomplish?

Hi, i already do that, but book sample still doesn't appear. but close button appear. what's wrong with my code? Thank you

Hi, if you click on the ContentManager prefab in your Hierarchy view, you will find the Json Server Url in the inspector of that object.

Or, equivalently, you can find the public variable defined in the ContentManager.cs script.