Solidity: Send some money to myself

Question

I have a question from Solidity, and my IDE is use Remix, I want to send some money to my self.

My Code:

pragma solidity ^0.4.24;
contract toMyself{

    address owner;

    function toMyself()public{
        owner = msg.sender;
    }
    function Send(uint x)public payable{
        owner.transfer(x);
    }
}

But when I press the Send button, it will show me a message like:

Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending?

How can I fix it?

Answer 1

1. Are you sure that the contract has enough ether available to send?

2. Don't you prefer switching

function Send(uint x)public payable{
    owner.transfer(x);
}

to

function Send()public payable{
    owner.transfer(msg.value);
}

So you send to the owner whatever is coming into the smart contract?

Also, you can send back whichever quantity has just been sent to the msg.sender in this way:

function SendBack() public payable{
    msg.sender.transfer(msg.value);
}

But this will end being useless and wasting some gas.