Hi, the mentioned demo example allows you to edit the entered remark in the embedded browser popover, and BIMx will show you the updated element information. So it's a bidirectional communication since BIMx UI is extended with a live browser interface. Can you check again that the edited remark is updated in BIMx? Graphisoft has a guideline only for the BIMx extension part with the different use case scenarios; setting up the environment is up to your creativity. Anyway, I hope you find my reply useful.