Shortcode and varibles

Is there a way to put something like a shortcode in your post or page and then to have that put in a variable?
Example:
lets say u put [hello yes=5] into a post
with the shortcodes right now i would have to write a function that would return something.
But is there a way to get this information into a variable? lets say like $hello = array(‘yes’ => 5) or just $hello = ‘yes,5’?