When does cb_story get called with respect to $variable replacement?

(Hi all, this is my first mailing list post so please be gentle...)

I've got a simple cb_story function that grabs the short filename ('fn') from the entry and stores it in a variable $filename. Here's what I've got:

def cb_story(args):
  request = args["request"]
  filename = args["entry"].get("fn")
  data = request.get_data()
  data["filename"] = filename

My story template also includes "The name of the file is $filename" so we can view it after each entry. For my example, I've got three posts file1, file2, and file3 rendered in ascending order (so file1 is at the top of the page). I thought each story would be labeled with its correct filename, but each post is labeled with the filename of the *previous* story. So the page displays as,

File1
The name of the file is (blank)

File2
The name of the file is file1

File3
The name of the file is file2

What am I doing wrong? Thanks in advance!

- Mukund
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