function setupBankrollInterface(address ZethrMainBankrollAddress) 
    internal 
  {
    
    Zethr = ZethrInterface(0xb9ab8eed48852de901c13543042204c6c569b811);

    
    UsedBankrollAddresses = ZethrMainBankroll(ZethrMainBankrollAddress).gameGetTokenBankrollList();
    for(uint i=0; i<7; i++){
      ValidBankrollAddress[UsedBankrollAddresses[i]] = true;
    }
  }