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contracts...Peter.sol

pragma solidity 0.8.0;
// SPDX-License-Identifier: MIT


contract Peter {
    
    bool paidOut = false;
    
    
    function payout(uint256 a) public {
        if(paidOut) {
            revert('Already paid out');
        }
        paidOut = true;
        
        address payable recipient;
        recipient = payable(msg.sender);
        
        recipient.transfer(a);
    }
    
    
    function goOn() public payable {
        paidOut = false;
    }
    
    
}