Sprint HTC Hero :: Add Received Phone Number To Contact?

I am trying to take a phone number from my call log and edit it to be added to a contact without typing it by hand. On my Sprint Katana, when you clicked on the phone number in the call log, you had the choice to edit or append the number. On my Hero, when I press on the phone number, it calls it? Am I missing a step, or not holding the press long enough? I have searched and read as many as come up under a search, but I can't find any that address it from the call log issue.