Hi, please try this code snippet. It worked for my use-case.
rt = sfroot;
m = rt.find('-isa', 'Stateflow.Machine', '-and','Name',bdroot);
visChart = m(1).find('Visible',1); % find stateflow chart handle
editor = visChart.Editor; % Editor object of the current
curObj = editor.selectedObjects;
curObj stores all the SF objects that are selected.
