No input box to enter CID to clear a specific cache cid

Selecting the "Clear a specific cache cid" action, there is no box to specify which CID to clear.

This was working in Beta 2. Compared to the Beta 2 code, it appears the following was changed: in cache_actions.rules.inc, line 34, 'type' is now set to 'value'

array(
//Line 33 starts below...
         'cid' => array(
           'type' => 'value', //This was set to 'string' in previous version.
           'label' => t('Cache cid'),
           'description' => t('The cid to clear')
         ),
)

Changing 'type' back to string appears to fix the problem.