(copied from https://issues.jboss.org/browse/JBIDE-23182?focusedCommentId=13306362&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13306362):
We need to update EvaluationContext in OpenShiftResourcePropertySection class for example like this:

table.addSelectionChangedListener(new ISelectionChangedListener() {
			
			@Override
			public void selectionChanged(SelectionChangedEvent event) {
				IHandlerService service = (IHandlerService) page.getSite().getService(IHandlerService.class);
				service.getCurrentState().addVariable(ISources.ACTIVE_CURRENT_SELECTION_NAME, table.getSelection());
				
			}
		});

But this made no sense, because in the example above i'm trying to update the global evaluation context from getter. Nothing just happens. So the way to solve it is to define a child evaluation context, which will be used then in Handlers too.
I think it's a much bigger refactoring, than the one that Slava made. I think we should merge it.
However, i might have missed some possibilities and maybe someone has more experience with updating the evaluation context. That is the thing that should be done for Properties view similarly to what i offered above, because it's a "peculiar" view.