Ver 9.05 Updateable Dashboard

I am trying to create an updateable Dashboard for Purchasing to update the confirm and promise dates.  I have everything working but found the when a PO Approved check box is uncheck the Header is update for both the check box and ApprovalStatus field goes from A to U.  When you run the Approval checkbox through the updateable Dashboard the logic does not change the approval status. 

 

Can someone point me in the right direction on how you would do this?  I am currently having them change the approved through PO entry and then updating the Promise Date through the Dashboard.

 

Thanks

 

Steve