How to focus on custom ribbon tab when selecting row in the list grid. Sharepoint 2010

I wrote custom actions for entity. Combined and deployed it to the server, and linked from buttons in my custom tab.

Case "What is going on in SP2010": I`m selecting list, then selecting row in the grid, and new contextual gr开发者_如何转开发oup "List tools" are showing above with two subtabs, where first one "Items" is focused on automatically.

Case "What i need": Do the same, but at the last stage i want to focus on my custom tab, which will show my new actions.

Try this:

MyCustomTab.IsSelected = True