I really like having this as an option. However, we did not exactly "Know" this was being rolled out with this release and it cause a bit of confusion with our users. I can see this feature mentioned in the release notes however it can be challenging...

You can do this by creating a Looker Parameter that has each project listed as an option (this will avoid user typo's). Below is an example where I created a view that allows users to select the table at runtime. The Parameter will be displayed in th<!-- -->...

You will probably need someone to model this in a tabular format by parsing the category and value lists into rows. If this is in BigQuery you may be able to do this in Looker by creating a view containing SQL using the Unnest( )and Split() functions...

Not sure I understand what you are looking to do. The Dimension will be used to create a SQL Statement. So what would that “For Loop” look like in a block of SQL?However, if you are just looking to create a single Dimension where the result is 1,2 , ...

just to clarify are you saying the changes to the Dashboard are not showing up or that the data is not being refreshed?