the ones that currently say false() are what I'm trying to get to clear after submission. I tried null too and got an error.
http://www.flickr.com/photos/51235350@N06/4748780644/
error is: Some rules not applied.
InfoPath cannot submit the form.
An error occurred while the form was being submitted.
A value in the form may be used to specify the file name. If you know the value in the form that specifies the file name, revise it and try again. Otherwise, contact the author of the form template.
thank you!