Is SEO fine with variables for keyword content?

I'd like to do the following in CF.

I understand the CF vars will be resolved on the server side and clients won't see the CF, but just making sure.

I want to do this in my CF pages.

<title>#title_info#</title>

<meta name="keywords" content="#keyword_info#">

Then I can update #keyword_info# and #title# elsewhere.

(Maybe this is also good for a Google site question, but SEO won't be affected, right?)

Thanks for any suggestions/advice.

Cheers.