This question can be for either NExpandCollapseDecorator or NShowHideSubtreeDecorator

By using the NExpandCollapseDecorator, I want to know if it is possible to show another shape when the group is collapsed. Right now, only the "-" sign is shown, I want to know if it is possible to show a composite shape when the group is collapsed.

The NShowHideSubtreeDecorator could have worked fine for me, but it only works for outgoing shapes. I want to know if there is a way to make it work with both outgoing and non outgoing shapes. I am using it with a selection that contains, both outgoing shapes and non outgoing shapes, it only hides the outgoing shapes, but not the non outgoing shapes.

See this picture for more info

I did not get a response about solving this problem. Take a look of the attached picture, can you help me or provide me with more information about how to solve this problem.

thanks