How to access Bus Ports parameter from action bar in Buscreator/Busselector blocks?

When programmatically change bus selector/bus creator block to bus element port block through clicking by option from action bar "Bus Ports"? How can I programmatically do this in matlab?

for exampe from first image comment.png to access comment out parameter using get(gcbh,'commented');

same what parameter name to access busports ? --->from second image busports.png