A method to add a struct in a smart contract - solidity

createStruct.sol

function addNewUser(bytes32 hash, bytes32 id, uint startDate, uint exp, uint sex, uint8 age, bytes6 user_hash, StatusCode code, Hobbies hbobbies) external returns(bool) {
    CustomDataType storage user = registry[hash][msg.sender];
    require(user.id==0,"User already exists");
    //******This is only an example ******
    user.id = id;
    user.startDate = startDate;
    user.iat = now*1000;
    user.exp = exp;
    user.sex = sex;
    user.age = age;
    user.hash = user_hash;
    user.code = code;
    user.hobbies = hobbies;
    user.status = true;
    user[hash][msg.sender] = user;
    emit UserRegistered(hash, msg.sender, id, startDate, user.iat, sex, user_hash, code, hobbies);
    return true;
  }