[JAVA3D] Force render

[Alex]

Hi all,   I have two branchgroup that have different scene. I added one of the branchgroup to the locale. After that, I remove this branchgroup from the locale and added the other branchgroup to view another scene. The new scene doesn't seem to update or render. It will only render after I rotate the view. How do I force the scene to render once everytime the scene changes? Any help is appreciated. Thanks in advance.   - Alex -