Accessing dynamic text in a movieclip

I have a movieclip of instance name “menuBtn”. And within the movieclip itself, I have a dynamic text on it named “btnName”.

How do I access the dynamic text in the main timeline?

I tried menuBtn.btnName.Text = “something” and it doesn’t work.
btnName.Text = “something” doesn’t work either.

So, can someone tell me the correct way to access it?