So, if I'm publishing a post, and set a value for this posts custom field, can I set the custom field value of all other posts to false?
Well that's good to hear that it is possible, but maybe there is a better way to achieve my goal: I'm fairly new to WordPress, and the WordPress stack exchange site so I apologize if I'm not putting out all the required info.
I have a "Designer" custom post type for creating profiles of designers, and I would like to have the option for "Featuring" 1 particular designer and un-featuring the previously "Featured" designer. I am using "Custompress" plugin for post types, taxonomies, and custom field, currently.
Thoughts on how I might achieve this are all very welcome!
I like the sounds of mfields suggestion, but I have yet to discover what a "custom setting" is. Would you mind elaborating or pointing me in the right direction?