# Hardcoded variables should be placed as constants Low/Info · Three Sigma · Omnichain RWA tokenisation · 27th January, 2024 Finding 3S-MetaZero-N04 of the MetaZero Omnichain NFTs security review. - Protocol: https://metazero.gg/ - Report: /reports/metazero-i - Source: https://cdn.sanity.io/files/qoqld077/production/1b1ab4ff365756fe1d86767f1e06744407570f5a.pdf --- ### Description The [LzEndpoint](https://github.com/threesigmaxyz/metazero-issues-external/blob/master/src/ONFTV2-721C.sol#L48), a [minter](https://github.com/threesigmaxyz/metazero-issues-external/blob/master/src/ONFTV2-721C.sol#L55), the royalty [fee](https://github.com/threesigmaxyz/metazero-issues-external/blob/master/src/ONFTV2-721C.sol#L53) and the pay in zero flags [([1]](https://github.com/threesigmaxyz/metazero-issues-external/blob/master/src/ONFTV2-721C.sol#L108), [[2])](https://github.com/threesigmaxyz/metazero-issues-external/blob/master/src/ONFTV2-721C.sol#L152) are hardcoded values, but should be placed as constants instead. ### Status Acknowledged --- Related findings: - [Constants should be placed as constants and not hardcoded for better readability](https://0xsimao.com/findings/fuji-finance-constants-hardcoded-better-readability): Fuji Finance - [Constants should not be hardcoded](https://0xsimao.com/findings/metazero-ii-constants-hardcoded): MetaZero Staking