function flip() external {
    // Make request to Randomizer with 100k callback gas limit
    uint256 flip = Randomizer.request(100000);
    flipToAddress[flip] = msg.sender;
}

function randomizerCallback(uint256 _id, bytes32 _value) external {
	require(msg.sender == address(Randomizer));
    address player = flipToAddress[_id];
    // Convert the random bytes to a number between 0 and 99
    uint256 random = uint256(_value) % 100;
    // 50% win/lose
    if(random >= 50){
      emit Win(player);
    } else {
      emit Lose(player);
    }
}