function setSafeCollateralRatio(address pool, uint256 newRatio) external checkRole(TIMELOCK) {
   if(IVault(pool).vaultType() == 0) {
      require(newRatio >= 160 * 1e18, "eUSD vault safe collateralRatio should more than 160%");
   } else {
      // @audit-ok SCR is always at least 10% greater than BCR.
      require(newRatio >= vaultBadCollateralRatio[pool] + 1e19, "PeUSD vault safe collateralRatio should more than bad collateralRatio");
     }

   vaultSafeCollateralRatio[pool] = newRatio;
   emit SafeCollateralRatioChanged(pool, newRatio);
}
function setBadCollateralRatio(address pool, uint256 newRatio) external onlyRole(DAO) {
  // @audit-issue BCR and SCR relationship is not enforced correctly.
  require(newRatio >= 130 * 1e18 && newRatio <= 150 * 1e18 && newRatio <= vaultSafeCollateralRatio[pool] + 1e19, "LNA");
  
  vaultBadCollateralRatio[pool] = newRatio;
  
  emit SafeCollateralRatioChanged(pool, newRatio);
}
require(newRatio <= vaultSafeCollateralRatio[pool] + 1e19);
require(newRatio <= vaultSafeCollateralRatio[pool] - 1e19);
require(newRatio >= 130 * 1e18 && newRatio <= 150 * 1e18 && newRatio <= vaultSafeCollateralRatio[pool] + 1e19, "LNA");
require(newRatio >= 130 * 1e18 && newRatio <= 150 * 1e18 && newRatio <= vaultSafeCollateralRatio[pool] - 1e19, "LNA");
