SMS notification to authenticated users once content type is created

I am trying create a site for where authenticated users can register their mobile numbers via a block and then be automatically sent an sms when a content of certain types are created. I have clickatell working ok to send confirmations and send to phone works - I have also created a rule that states that every time a content of type x is saved send an sms.

When I get to the rule to send to a destination number I cannot see an option to add all users with confirmed numbers.