The original definition selected the checkbox for ""Trigger on any change in string"". When you later go to modify the definition, this checkbox is not selected and is greyed out.I attached a testcase.Invoke AVE.bat -afp VWBTest.afp -ctl VWBTest.AnyChange.ctlSelect IndexAFP modeSelect Tools->Modify definitionsSelect definition AAAAAAClick ModifyClick Advanced TabWhen wrong (before this fix), the ""Trigger on string value changing"" is checked but the ""Trigger on any change in string"" is not checked and the selection is greyed out.When right (after this fix), both of the above are selectable and checked.