Hi Arturo,Normally what you want should be achieved with a transmission:��browser transmit��fromOutsideEntityPort;to: #Example port: #selection;transformed: #first.Just I see that doesn't work as expected with #fastTreeTable.The closest thing that looks similar to what you want is:| browser |browser := GLMTabulator new.browser row: #Example.browser transmitto: #Example;andShow: [ :a |��a table������ column: 'Class Name' evaluated:[:clazz| clazz name];�� children:[:clazz| clazz subclasses];���� shouldRootsExpand: true ].browser transmit��fromOutsideEntityPort;to: #Example port: #selection;transformed: [ Abort ].browser openOn: {Object}.Cheers,AndreiOn Wed, Oct 3, 2018 at 9:53 PM Arturo Zambrano <arturo.zambrano@gmail.com> wrote:Hi all,��I'm trying to do what subject says. I tried something like that��(in the example I'm trying to get Abort class selected):| browser |browser := GLMTabulator new.browser row: #Example.browser transmitto: #Example;andShow: [ :a | a fastTreeTable������ �� column: 'Class Name' evaluated:[:clazz| clazz name];�� �� �� �� �� �� �� ����children:[:clazz| clazz subclasses];��allExpanded;"this has no effect" strongSelection:Abort;"this has no effect" selection: Abortbrowser openOn: {Object}��Could you please point me what I'm missing?�� TIAArturo