Thank you for the reply. I am going to give a shot to your VST3EditDelegate suggestion.
After much digging in the source code, I indeed realized that the again sample provided with the SDK uses a sub controller to extract the value of the text edit view in order to “send a message”. So if I am having issue with the VST3EditDelegate solution, I think I should be able to follow the again example at the very least…
So I think I should be able to make it work one way or another. I wished it was built-in 
Thanks!
Yan