Username in preview shows {username}

Hi!

Maybe I do not have the patience, but I did not find any solution(s) to my problem.

1) Using Joomla 1.5.14 + !JoomlaComment 3.26
2) Using customization of SSlideBoth-emotop HTML with css-blackbg style
3) Altering HTML from the Joomla backend.
4) Altering HTML line #26 from:

<a href="/{PREVIEW_LINK}#josc{id}">{PREVIEW_DATE} <b>{PREVIEW_TITLE}</b></a>

<a href="/{PREVIEW_LINK}#josc{id}">{PREVIEW_DATE} {username} <b>{PREVIEW_TITLE}</b></a>

5) Expected result is not what the given is. I thought that "{username}" would be replaced by the comment authors nick. All I get is "...{username}..."

Question: Where am I doing wrong?
If not - is this a bug => kill it.
If not a bug - advise me.

Regards

Resolved Username in preview shows {username}