[Joe Ross]

Use the bundle, rather then bundle by name.

The by name versions are nice if you create a .ctl with your cluster as a typedef, which you'll want to do once you start adding more things to the dashboard, but is overboard for just two items.

Yes, you need the flatten to string after the bundle, before the flatten from string. On the dashboard side, you'll need to create a "fake" cluster to feet into the unflatten from string, so that it knows how to decode the string.