I'm am trying to make a TabView for the user. The idea that I came up with is in the manager to create a GroupBlock that holds all the buttons ("tabs") of the TabView and I want to give each of them a DataSelectField where the manager can select what block the tab should contain. I looked over the PageItem example (page item), but I don't know how to get all the blocks of the current page. Any ideas with this? Or how a TabView should be created? Thanks