Field fApproval = newList.Fields.AddFieldAsXml(string.Format("<Field DisplayName='{0}' Type='{1}' />", _workflowInfo, FieldType.Note),
                                           true,
                                           AddFieldOptions.DefaultValue);
fApproval.Update();
newList.Update();
cDestination.ExecuteQuery();

newItem[_workflowInfo] = workflowInfo.ToString(); // Or any data, tried to add just string as well, didn't work

newItem.Update();
cDestination.ExecuteQuery();