    function test_poc__lowCushionDeployWithWallspread10000Reverts() public {
        /// Initialize operator
        vm.prank(guardian);
        operator.initialize();

        /// if the wallspread is 10000 the operate might revert
        vm.prank(policy);
        operator.setSpreads(7000, 10000);

        /// Confirm that the cushion is not deployed
        assertTrue(!auctioneer.isLive(range.market(true)));

        /// Set price on mock oracle into the lower cushion
        /// given the lower wallspread is 10000
        /// when the lower market should be deployed the operate reverts
        price.setLastPrice(20 * 1e18);

        /// Trigger the operate function manually
        /// The operate will revert Error with "Division or modulo by 0"
        /// But I could not figure out to catch with `expectRevert`
        /// so just commenting out the assert
        // vm.prank(guardian);
        // /// vm.expectRevert(bytes("Division or module by 0"));   // this cannot catch the revert...
        // operator.operate();
    }
// modules/RANGE.sol


242     function setSpreads(uint256 cushionSpread_, uint256 wallSpread_) external permissioned {
243         // Confirm spreads are within allowed values
244         if (
245             wallSpread_ > 10000 ||
246             wallSpread_ < 100 ||
247             cushionSpread_ > 10000 ||
248             cushionSpread_ < 100 ||
249             cushionSpread_ > wallSpread_
250         ) revert RANGE_InvalidParams();
// policies/Operator.sol::_activate(bool high_)
// when high_ is false
421             uint256 invWallPrice = 10**(oracleDecimals * 2) / range.wall.low.price;

// modules/RANGE.sol::updatePrices
164         _range.wall.low.price = (movingAverage_ * (FACTOR_SCALE - wallSpread)) / FACTOR_SCALE;
// modules/RANGE.sol


242     function setSpreads(uint256 cushionSpread_, uint256 wallSpread_) external permissioned {
243         // Confirm spreads are within allowed values
244         if (
-245            wallSpread_ > 10000 ||
+               wallSpread_ >= 10000 ||
246             wallSpread_ < 100 ||
247             cushionSpread_ > 10000 ||
248             cushionSpread_ < 100 ||
249             cushionSpread_ > wallSpread_
250         ) revert RANGE_InvalidParams();
