Closing a Shell with another shell?

Well i have a bg shell that needs to have the ability to close another shell running but i'm unsure of how or if its even possible to close another shell within one.

any help?

multishell doesn't support this (from what I have read on the wiki) Edit: also checked the source code for multishell, not supported

use another coroutine manager (search the forums), you will need one which allows programs to send events to each other (send a terminate event) or one which allows programs to close each other (likely does the same thing)