[support] Twitter Module- Auto post to current twitter user account

Hi, I'm using the twitter module for my site and getting errors when I enter tokens in the actions field for the twitter username. How do you set up a rule to post a message to the current user's Twitter account? At the moment, the form in the "Post a message to Twitter" action only permits a static screen name. I want to use a token for the current user's Twitter account. Any ideas? Thanks, Ayath