The Trigger image can be changed/updated `on the fly` e.g. in case the print pattern changes while you are working on the AR Scenario already
To do so please click on the genARate Icon in lower left corner (below content toolbar)
Now all content you have added before, temporarly switches to background and you can only see the uploaded trigger image including the star rating on the top right.
You can find the upload link of the image and a button to REPLACE the link with a different trigger or an updated version of the image right below the star rating
The contents you have added should appear at the same position after the change but be aware that transitions in position or scaling might apply when the new image has a different size in pixels than the previous one