我有一份合同，看起來像這樣 -contract Calculator {    uint public result;    constructor() public {       result = 777;   //note the initial value    }    function add(uint a, uint b) public returns (uint, address) {       result = a + b;       return (result, msg.sender);    }}當我在松露上調用該函數時，我得到了正確的交易 -truffle(development)> await calculator.add(5,11){  tx: '0xa66e94bb28810bb2a861c97ee149718afa599d47b7b1c6e55743ea657fdeef56',  receipt: {    transactionHash: '0xa66e94bb28810bb2a861c97ee149718afa599d47b7b1c6e55743ea657fdeef56',    transactionIndex: 0,    blockHash: '0x6ae4e3ce65f1e177c419306a50662ed46f40c729a6a18ede028b07e63dd12f61',    blockNumber: 6,    from: '0x5d88950b52f89ad66906fc263e8c35ddacff04d4',    to: '0x7c8beb382c70cbf12b41fd4e5d74cfee53fdc391',    gasUsed: 26074,    cumulativeGasUsed: 26074,    contractAddress: null,    logs: [ [Object] ],    status: true,    logsBloom: '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000200000000000000000000000000000000000000',    rawLogs: [ [Object] ]  },  logs: [    {      logIndex: 0,      transactionIndex: 0,      transactionHash: '0xa66e94bb28810bb2a861c97ee149718afa599d47b7b1c6e55743ea657fdeef56',      blockHash: '0x6ae4e3ce65f1e177c419306a50662ed46f40c729a6a18ede028b07e63dd12f61',      blockNumber: 6,      address: '0x7C8beb382C70CbF12b41fd4e5d74CfEe53FDc391',      type: 'mined',      id: 'log_28a5e84f',      event: 'Added',      args: [Result]    }  ]}