Currently Being ModeratedFeb 5, 2013 2:36 PM (in response to Cynamync)
What you're trying to do requires you to be running Mountain Lion. See: http://support.apple.com/kb/HT4759
Without Mountain Lion, iWorks documents must be uploaded manually. You have to go to icloud.com, click the iWorks icon, then the appropriate document type. After that, click the gear in the upper right and pick 'upload document'.