I have a system where I have something like: fields.name fields.member.phone_number fields.member.email fields.location.city fields.location.country I keep getting errors like this The field 'member.email' was not recognised. I would like to know how I can do this and do it right. The thing is that fields.name is from one DataWriter where the other two are from another two data writers. I also have some fields that are NOT part of the datawriter and are handled prior before saving such as total members and the amount which is calclated right before its saved... Well it doesn't have a field name The field 'cost_per_member' was not recognised. Any idea on how I can do this?