$.ajax({
            type: "POST",
            url: "TestResults.aspx/SaveNewComment",
            data: JSON.stringify({
                tagId: tagIdvalue,
                samplingConcern: samplingConcernValue,
                analysisConcern: analysisConcernCodeValue,
                initialThoughts: initialThoughtsValue
            }),
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: function(msg) {

                alert(msg);
		// alert just won't work, I've tried msg.lastName
		// ideally the object returned here will be used to populate the form


            },
            Error: function() {
                alert('failure');
            }
        });