Simple way of loading a var from a file and replacing it with an updated version?

Hi, I would like to have flash (as3) to save a var to a text file located on my [COLOR=darkgreen]server[/COLOR] so everyone can reach it from their client swfs. I also need to know how to update this variable by loading latest var on the server and writing over it with a new updated var.

I’ve read so much already and it all seems so confusing

http://www.kirupa.com/forum/showthre…S3-PHP-Notepad
http://www.flash-db.com/Tutorials/sa…ata.php?page=7
http://www.flash-db.com/Tutorials/sa…ata.php?page=2
http://www.flash-db.com/GuestBookTut/

For example, I could have a file called hello.text on http://www.randomsite.com/game/hello.txt which contains:

variable=potatoe

I would like to, whenever I feel like it, be able to load that var and replace it with something else.

Any simple solution for this?

Many thanks in advance.