community name in workflow notification

We are using 6.5.2 and we are trying to add the community name in email notifications. Other system variables such as sys_title and sys_contentid work but not sys_communityname.

Have added as $(sys_communityname) but it just displays as is and doesn’t substitute the community name for the variable.

This is what we have and it works just fine:

Dear Author

The following piece of content needs to be reviewed.

Comments:
$wfcomment

Contentid: ${sys_contentid}
Title: ${sys_title}
Community: ${sys_communityid} - ${sys_communityname}
Content Last Modified By: ${sys_contentlastmodifier}
Content Last Modified Date: ${sys_contentlastmodifieddate}