having tried this it doesn't see to work. I think that because the drop-down is a secondary data source I'm not applying the correct formula. The data source is a SharePoint list which contains a username, and a raffle responsibility. The dropdown in InfoPath has two boxes, the first is the dropdown which gets it's raffle details from the SP list, and if the user selects 'other' then the section with the free text box should appear. I have tried using the ID and also querying the data source but nothing seems to work