Dynamic AR Kit ImageAnchor

Hello,

I would like to develop an app that scans a barcode that serves as a reference image in the next ARKit scene.
The barcode is decoded using ZXing. I get the barcode as a Texture2D.
When the barcode is scanned, a button will appear to switch to an ARKit scene.
in this scene, the Texture2D should serve as an ARKit reference image

I tried the following:

1.) In the Decode Script (without ARKit):

Code (CSharp):

1. public static string Decode(Texture2D tex)
2. {
3.    BarcodeReader codeReader = new BarcodeReader ();
4. ...
5.    GenerateImageAnchor gen = new GenerateImageAnchor();
6.    gen.SetReferenceImage(tex);
7. ...
8. }

In the GenerateImageAnchorScript from the ARKitExamples(ARKitImageAnchor):

Code (CSharp):

1. public void SetReferenceImage(Texture2D refImage)
2. {
3.    this.referenceImage.imageName = "barCode";
4.    this.referenceImage.imageTexture = refImage;
5. }

barCode is the name of the ImageAnchor i created in Unity.

That doesn't work. Is there a way to do that?

Thanks!