How to modify the parameters passed in from the outside in the slate widget？

[xfause]

Your blog is brilliant, solved many problems.

but I still have some ohers, like how to modify the parameters passed in from the outside？

For example I made a custom file view widget with STreeView, I passed some values from outside to SMyViewer, and I want to make changes on those values, therefore I can do something outside the widget.

I tried pass some shared references or pure references, but they either go wrong in the constructor or cannot be modified.

Could you help me to solve this problem?