SEO Functions - Dynamic META TAGS

Hello Everyone,

In my VBSEO control panel, I have opted to say yes to both:

Replace the 'META KEYWORDS' Content?
This option replaces the 'META DESCRIPTION' content with the first words of the first posting in the page to a limit defined in the option below.

and

Define the 'META DESCRIPTION' Length?
The meta description tag usually consists of 150 to 200 characters or less.

However when I do a metatag search on metatag checker websites, the metatags that I've inputed in my vb control panel show up instead of being replaced as noted above by vbSEO.

Why is this and how do I make these 2 above functions work?

Please see attachment for actual location of the described.

Thank you very much.

Please note that keywords/description is not modified on forums homepage (only forumdisplay/showthread/etc) pages. Also meta keywords tag is not replaced, but modified by adding specific keywords to existing ones that you define in vB admincp.

I see.

Thank you very much