Hello Imran,
I recently got the similar requirement and I solved it.
Just by creating Outbound Plug as public in Implementation class.
Go out from component and reload the component.
Then redefine the Outbound Plug .
Now Outbound plug will be in Public.
You are getting the error because of creating Outbound Plug in protected which we cant access
from Get_V method. When we create any Outbound plug system creates as protected.
This solution may helpful for anyone looking for this problem.
Thanks,
Vinay D