# File ruby/comm_xmlrpc.rb, line 174
          def call(sid,obj_id,method_name,*args)
                begin
                  return export_filter(@receiver_proc.call(sid,obj_id,method_name,args))
                rescue Exception => e
                  puts e,e.backtrace
                  return [EXCEPTION_SYMBOL, e.class.to_s, e.message, e.backtrace.join("\n")].join(EXCEPTION_SEP)
                end
          end