Prompts in Books

Summary: Prompts do no seem to be working

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I have two reports that each prompt you to select a member from the department dimension when they are run. But when I add them to a book, and then run the book, I am no longer prompted. I know I am probably doing something wrong, I just cant figure out what it is. I have prompts added under the "Prompts" section of the book properties, but it still does not seem to work

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