In CAF design page, how to refresh a portlet view component residing in other view.

Hi all,
I am making one design where in inside on portlet I have three view(main,top,bottom) & and using template import view component I have imported top/bottom view in main page.
Now I am trying to refresh some component of main.view with action from top.view.

Not getting any way to refresh component in main view.

Thanks
Baharul