$_GET value do not work in if loop - php

Question

If I echo $codeee outside of the if loop, the value shows, but the value does not exist inside the loop which causes the UPDATE query to fail. How can I use the variable inside the loop?
PHP Code
require('connect.php');
$codeee = htmlspecialchars($_GET["recov"]);
echo $codeee;
$paso = $confpaso = "";
$pasoErr = $confpasoErr = "";
if ($_SERVER["REQUEST_METHOD"] == "POST") {
if (empty($_POST["paso"])) {
$pasoErr = "Password is required";
} else {
$paso = md5(test_inputing($_POST["paso"]));
}
$confpaso = md5(test_inputing($_POST["confpaso"]));
if ($confpaso != $paso) {
$confpasoErr = "Passwords do not match";
}
$emailing = test_inputing($_POST["emailing"]);
if ($pasoErr == $confpasoErr && $confpasoErr == "") {
$changepaso = "UPDATE users SET password='$paso' WHERE forgotcode = '$codeee'";
if ($conn->query($changepaso) === TRUE) {
$tellthem = "Your password was changed";
} else {
$tellthem = "Something Happened, the password was not changed";
}
}
}
HTML CODE
<form action=<?php echo htmlspecialchars($_SERVER["PHP_SELF"]) ?> method="post">
<div class="register-top-grid">
<h3>FILL OUT YOUR INFORMATION TO CHANGE YOUR PASSWORD</h3>
<div>
<span>Email<label>*</label></span>
<input type="text" name="emailing" >
</div>
<div>
<span>Password<label>*</label><p style="color:red"><?php echo $pasoErr ?></p></span>
<input type="password" name="paso" >
</div>
<div>
<span>Confirm Password<label>*</label><p style="color:red"><?php echo $confpasoErr ?></p></span>
<input type="password" name="confpaso" >
</div>
</div></br></br>
<input type="submit" value="submit">
<p><?php echo $tellthem ?></p>
</form>