Temp.sol

pragma solidity ^0.4.13;

contract Paybale {
    address owner;
    
    constructor () {
        owner = msg.sender;
    }
    
    mapping (address => uint) balances;
    
    
    function pay() payable {
        balances[msg.sender] += msg.value;
    }
    
    function withdrawToOwner() public {
        require(msg.sender == owner);
        msg.sender.transfer(this.balance);
    }
    
    
    // Ether Transfer Syntax: address.transfer(value)
    function withdrawToUser() public {
        uint value = balances[msg.sender];
        require(value >= 0); 
        balances[msg.sender] -= value;
        msg.sender.transfer(value);
    }
    
    
    mapping (address => mapping(address => bool)) public arrived;
    
    function register(address packageID, address companyID) public {
        arrived[packageID][companyID] = true;
    }

    
}