Using { } Codes In HTML??

I would really like for there to be a { username } code in one of my HTML pages. Is there any possible way I could make it work? When I try, it just says { username } it doesnt say Crum98 or anything. It is a slightly necessary feature, but I CAN work around it.

Im using it to link to another website which all users have registered to as well. It goes to their profile.
I use Iframes to display it on a forum page.
So it would be something like

Code:

<iframe src="www.website.com/{ username }"></iframe>

It still is not working. When I try it in the URL it says 'url not found' and when I type it in on the page it still says { username}
(I have to add the spaces for posting, if i dont it says Using php in posts is called being a smart [Language]... Stop it)

In the add HTML pages area, is for a new page that im making

How do you do that?? :3

Ok ive done that. It still just shows up as {username }

Yes I have been capitalizing all of it, and i have also tried the code you just sent me.

I am trying to rebuild this page:
http://repterrarium.4umer.com/h2-your-terrarium
to go to a different link like this:
http://repterrarium.myadopts.com/profile.php?user=Crum

Im testing it on this page:
http://repterrarium.4umer.com/h15-tests

Ok i got the username thing to work.. now for the link *crosses fingers*

NUUUUU It doesnt work
When I put the URL into the Iframe it doesnt give the correct link. It still links to mysite.com/user=<span class="USERNAME"></span> and not mysite.com/user=me
Which makes it redirect to the incorrect page, it says 'this user does not exist'

That's because you can't a put a SPAN element in a HREF attribute lol.

I've updated that tutorial (http://www.avacweb.com/t125-17-variable-in-html-pages-and-templates ) to include a method for putting the username in links and attributes.

You'll be able to achieve what your trying to after reading and updating your script.

It works!! Thank you all sooo much!