Remix always constructing 0 withdraw transaction

Using remix I have deployed the following code

``` pragma solidity >=0.7.0 <0.9.0;

contract Faucet {

// Give out ether to anyone who asks function withdraw(uint withdraw_amount) public {

// Limit withdrawal amount require(withdraw_amount <= 100000000000000000);

// Send the amount to the address that requested it payable(msg.sender).transfer(withdraw_amount); }

// Accept any incoming amount receive () external payable {}

}

```

When I construct a transaction to widthraw via remix UI, it always constructs a transaction that widthraws 0, no matter how much I tell it to widthraw.

This can be seen in this screenshot https://imgur.com/a/eWDiq8p

Any idea why or what I am doing wrong?