eaglejohn on "[Plugin: WordPress SEO by Yoast] Analyse "custom fields""

Is it possible to let the plugin analyse custom fields setup by ACF or Types?
On some templates I'm not using the default WYSIWYG editor/field at all so the plugin thinks that I'm not using keywords in my content, but my content is in a custom field.

http://wordpress.org/extend/plugins/wordpress-seo/