please tell me which method to make my tx fail before it been mined, i want check in my contract to compare block number, For example my transaction will be mined at block 500, frontrunners can only debug my transaction when block is less than 500, but not when is greater or equal to 500, So pass my target block into my smart contract and use it to compare with the current block, so when frontrunners try debugging they won't know what my tx comtains,
please help me for this