Hi, I'm new to Adobe Analytics and I'm trying to build a Freeform Table in Workspace. So far I have designated my report suite and added the correct page to my table. However, when I try to add a metric to my page, it's marked 'Invalid' and says 'you can only add a single metric to a report.' I'm confused by this because it is only a single metric and when I click the 'i' in the actual metric in the left-side of the screen, there is a linear visualization of the data, so I know the data exists. ...