Simple update into table doesnt obey...

Hi Sirs, I wrote these simples codes to update to one and same table. Curiosly, it's update ONLY with the second module. I do check it hours and hours to understand why? I dont see the problem. Anyone can help please.

/*----Module1----*/

if(isset($_POST['prop1_btn'])) {
include('testDB.php');
   $question=$_POST["question"];
$answer=$_POST["answer"];

   mysqli_query($conn,"update `champion` set answer='$answer' where question='1.1'");
}

/*----Module2----*/
if(isset($_POST['prop1_btn'])) {
include('testDB.php');
   $question=$_POST["question"];
$annexe3=$_POST["annexe3"];

   mysqli_query($conn,"update `champion` set annexe3='off' where question='1.1'");
}
?>