Can a "hybrid" plugin （mixed both Flex and HTML bridge)use proxy to connect to java service?

I have a vSphere Web client Flex plugin project which depends on vSphere Web Client SDK 5.1, and we use proxy class to manage

communication between a custom Java service and  Flex data views.

Now I try building a "hybrid" plugin（using both Flex and HTML bridge）in vSphere Web Client SDK 5.5.1.

I learn samples in vsphere-wssdk-html and find it doesn't use proxy class to connect to java service.

Can a "hybrid" plugin use proxy to connect to java service? If can,what should I do?

I failed to realize it by adding proxy configuration information and some methods.