The content list that you want to play on a specific screen, must be attached to that screen.
How to attach a Content List to a Screen
1. Ensure that the screen with the layout that you want to attach the content list to, is open.
2. Drag and drop the content list onto the screen layout.
3. A message will appear confirming the success of the action. It will also tell you which layer the content list has been attached to. Click on OK. The block will update with a frame from your attached content list.
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