awesome tutorial! I'm trying to wrap my head around how to make this only claimable every 24 hours per address. got this import "@openzeppelin/contracts/access/Ownable.sol"; contract EpicNFT is ERC721URIStorage, Ownable { mapping(address => bool) claimableAddresses; function _setClaimable(address _addr, uint256 _lastClaimedDate) private onlyOwner { if ((block.timestamp - _lastClaimedDate) > 24 hours) { claimableAddresses[_addr] = true; } } but I can't seem to make it work correctly... any idea?