InfoPath Dev

I found my solution, but am getting one minor validation error.  I used the information in the post below to create a Sharepoint list with the dates I needed.  http://www.bizsupportonline.net/infopath2003/autofill-fields-infopath-dropdown-selection-secondary-data-source.htm The error I'm getting though is the red dashed border ...

I've read several posts regarding calculating dates and can't seem to find the answer.  I've tried several options using rules and can't make it work.  I have a Date Picker field, ExpenseReportDate, that the user will select. Based on that date I want the weekdays for the two weeks prior to that to ...