I have a web enabled InfoPath form using a drop down menu to select a file that is in a SharePoint document library. I used a calculated value field, using the single line of text mode, to combine two fields, (a "file name" field and an "extension" field) so that I could bring this into InfoPath and link the file using a hyperlink. The problem is that when I create or modify my Data Connection my combined field is not in the list of options. Any ideas?