     function getVirtualChannel(bytes32 id) public view returns(
         bool,
         bool,
         uint256,
         address,
         uint256,
         address,
         address,
         address,
         uint256[2],
         uint256[2],
         uint256[2]
     ) {
         VirtualChannel memory virtualChannel = virtualChannels[id];
         return(
             virtualChannel.isClose,
             virtualChannel.isInSettlementState,
             virtualChannel.sequence,
             virtualChannel.challenger,
             virtualChannel.updateVCtimeout,
             virtualChannel.partyA,
             virtualChannel.partyB,
             virtualChannel.partyI,
             virtualChannel.ethBalances,
             virtualChannel.erc20Balances,
             virtualChannel.bond
         );
     }