function setParams(uint newBasisPoints, uint newMaxFee) public onlyOwner {
      
      require(newBasisPoints < MAX_SETTABLE_BASIS_POINTS);
      require(newMaxFee < MAX_SETTABLE_FEE);

      basisPointsRate = newBasisPoints;
      maximumFee = newMaxFee.mul(uint(10)**decimals);

      emit Params(basisPointsRate, maximumFee);
  }