Is It Possible To Insert Variable To Flash & Download The Updated File?

E.g:

Form on site with:
text-field: Whatever the user inputs
name:$text

Then the submit button/action as:
flashfile.swf?variable=$text

Then in the AS of the flash file a line like:
Some stuff here $text and then some more stuff here

And then once the user submits the form the $text is inputted into the AS of the file and the flash file is force downloaded onto the users PC.

Is this possible? I have seen it done before and can only assume that this is how it was done.

Example:
http://www.yourdownline.co.uk/1.swf?theVariable=BHW

But actually download that file with BHW inside the actionscript rather than .theVariable=theVariable