Problems in verifying a contract on scroll sepolia

Hi, I’m having some problems verifying a contract to the testnet. I’m using foundry and in particular I found the following line of code in scroll’s official docs:

forge verify-contract 0xmyContract param1 param2 src/myContract.sol:MyContract --chain-id 534351 --verifier-url https://sepolia-blockscout.scroll.io/api\? --verifier blockscout

Am i doing something wrong?