I tried fixing your html and replaced any dynamically generated values (ie the ‘exam’ dropdown values) with dummy data and did a var_dump on the $_POST variable.
This is what I got:
array(5) {
["action"]=>
string(13) "hauptFormular"
["exam"]=>
string(1) "A"
["annual"]=>
string(4) "2013"
["first"]=>
string(4) "John"
["last"]=>
string(3) "Doe"
}
So I’m getting the value of your ‘annual’ okay.