I looked up this tweet, with the status ID you provided, and the text is 136 characters:
_This year we supported 4,500 community organisations like the Burgess Park Food Project to create better places: http://t.co/XZivjbFEC2_
The URL on the end is a Twitter t.co url. If you hit a breakpoint, look at the Entities property of the Status instance. It has a UrlEntities collection with one item. That one item is for the t.co URL in the text. In this case, it's an ow.ly shortcut.
I found the tweet you're referring to in the previous post - used the id you gave me, found the user, looked at the user's timeline, and visually matched the tweet with some of the text you gave me. Here's the Text:
_Thanks to @groundworkuk for their work on my story, from having nothing at all and working towards my career http://t.co/Y1sO9cDK6j_
That's 131 characters. If you look at the Entities property, there's a UrlEntity for the t.co in the text above and it's Expanded Url is:
that matches the text in the message that starts at position 109 and ends at position 131.
Replace the t.co url with any text you want and wrap that in a hyperlink for the ExpandedUrl.
Does that answer your question?