This is the way I've done it.
1. Create a new track to record the corrected vocal to.
2. Output the vocal track to an analog output on your interface.
3. Run a cable from that output to the Voiceworks input.
4. Connect the output of the Voiceworks to an input on your interface.
5. Set the new track to the input you connected the Voiceworks to and set the output of this track to none.
Check all your levels. this should do it.