Extract text from application using applescript UI

HI All,
I am a new bie and i am trying to extract a text from an application UI.
According to the help from http://macmembrane.com/quickly-extract-a-shortened-url-for-anything-on-the-itunes-app-store/ i was able to retrive the image…
but not able to do for text.

Can any body help me in this.,.