Q about wp_object_cache

My problem is that when I add some data to the object cache, it doesn’t show up when I print_r( $wp_object_cache ); … Now I’m somewhat new new PHP, but I can successfully list all other objects in the cache, just not my data (maybe it’s not SUPPOSED to be in there??).

I know my cache data is working because the queries are reduced incrementally as I add more and more objects to the cache.

My function to add looks like this:

wp_cache_add( ‘foo2_options’, $var, ‘options2_foo’ );