When getting joined attribute, typing errors cause an exception.

[rogerhillgsy]

Code such as: -

            FluentOpportunity.Opportunity(opportunityId, _service)
                .UseAttribute((string s) => jn.name_long = s, "name")
                .Join<FluentBidManager>( bm => bm.UseAttribute( (int i) => jn.applicant_id = i, "new_staffid"))...

Will throw an unhelpful exception if "new_staffid" is not an integer type. No trace message is issued.
Expected action is that it will issue a trace message and then throw an ArgumentException with a informative error message.