https://www.infopathdev.com:443/forums/142.aspxAre you exploring new features coming up in 2010? Share information and ask questions here!enCommunityServer 2007 SP3 (Build: 31118.962)https://www.infopathdev.com:443/forums/thread/96130.aspxWed, 26 Feb 2014 16:32:58 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:96130Jigs280https://www.infopathdev.com:443/forums/thread/96130.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=142&PostID=96130I am Having Attachment Field in Infopath 2010 form, i want to make it mandatory on some condition, when i set the validation rule on attachment filed and i check condition like "someField=1 and attachment is blank" then cannot be blank it returns Fatal Exception. I tried it from code, I can Successfully make it mandatory by checking additional flag filed == 1 but after user adds attachment, mandatory (astrik) mark should get clear I tried to Clear flag using Attachment Change Event by setting flag field to again 0 but setting filed value in attachment Change event returns same exception. c_DisplayClass1.Setvalue What can be wrong??