constructor (address zthtknaddr, address zthbankrolladdr) public {
    
    owner = msg.sender;

    
    ZTHTKN = ZTHInterface(zthtknaddr);
    ZTHTKNADDR = zthtknaddr;

    ZethrBankroll = zthbankrolladdr;

    
    houseEdge = 990;

    
    ownerSetMaxProfitAsPercentOfHouse(10000);

    
    ownerSetMinBet(1e18);

    
    ZTHTKN.approve(zthbankrolladdr, MAX_INT);

    
    bankroll = zthbankrolladdr;
  }