Multireturn from services don't work

[DieMyst]

service GetMul("multiret-mut"):
    some_func2() -> u32, bool

func multiReturn() -> bool:
    res: *u8
    newState, finished <- GetMul.some_func2()
    <- finished

There is no finished value in air at all

                    (xor
                     (seq
                      (seq
                       (call %init_peer_id% ("getDataSrv" "-relay-") [] -relay-)
                       (new $res
                        (call %init_peer_id% ("multiret-mut" "some_func2") [] newState)
                       )
                      )
                      (xor
                       (call %init_peer_id% ("callbackSrv" "response") [finished])
                       (call %init_peer_id% ("errorHandlingSrv" "error") [%last_error% 1])
                      )
                     )
                     (call %init_peer_id% ("errorHandlingSrv" "error") [%last_error% 2])
                    )

[DieMyst]

Services can't return multiple results. Compiler must throw an error if service return multiple results.