BPM Data Form not showing data

I have a BPM data form that I wish to have display data to a user as well as prompt for additional information.

In the BPM, I have an action before the call to the data form in which I set the ttCallContextBpmData.character01 field to a specific string.
I then call the data form with a customization.

The customization has a text field added with Epibinding set to the ttCallContextBpmData.character01 field. My hope is that the data form would display the string in the field. Any suggestions as to how to get this to display?