User PMs

[Nkay]

If anyone can answer this question, i'd greatly appreciate it

I want to display a picture when users do not have any unread PM's.
I know that the code to use to display a picture if a user does have a new PM is:

<if condition="$bbuserinfo['pmunread']">
<img src="http://www.thinkhabboforum.net/images/misc/newpm.gif">
</if>

How do i make it show a picture if a user doesn't have any unread messages?

I tried "pmread" instaed of undread but that didn't work

Thanks in advance