First
try right-clicking the toolbar object in the learn and choose "Learn New
Children".
If
it is disabled then the learn can detect no children.
If
it is not disabled, try it, it might bring in the actual buttons that you want.
"Unknown"
is a genuine .Net CertifyClass which supports the .Net AnyClass actions.
You
want to find a method in the learns properties dialog to help you do whatever
action you want to perform. Then
use it with the "Execute Method" action.

First
check if there is a TestExecute method that starts with "Click" that looks to
be specific like "Click Button". There
should always be support for "Click" which takes coordinates. There
is often support for a "ClickXY" which also takes coordinates.