I am having a hard time with this. What I am trying to do, is to build a self help app to show videos that are attached to a SharePoint list. I am able to get the first screen to show the item, thumbnail, and when you tap, takes you to the list item with the description and summary for each.
It shows the thumbnail and I can add a media/Video control, which is nested under the gallery. I then add First(ThisItem.Attachment).AbsoluteUri and can see the video.
The problem is that it shows the same video for all list items. How can this be changed to only show the attachment for that list item? Any help would be greatly appreciated!