pragma solidity ^0.4.24;

contract Transaction {
    event SenderLogger(address);
    event ValueLogger(uint);

    address private owner;

    modifier isOwner{
        require(owner == msg.sender);
        _;
    }

    modifier validValue{
        assert(msg.value >= 1 ether);
        _;
    }

    function Transaction(){
        owner = msg.sender;
    }

    function() payable isOwner validValue {
        SenderLogger(msg.sender);
        ValueLogger(msg.value);
    }
}