    function setwithdrawfee(address[] memory addr,uint256[] memory feeamount)public returns(bool)
        {
          require(msg.sender==admin);
          require(addr.length <10 && feeamount.length < 10 && addr.length==feeamount.length);
          for(uint8 i=0;i<addr.length;i++){
            withdrawfee[addr[i]]=feeamount[i];    
          }
           return true;
        }