มีปัญหาในการแก้ไขข้อมูลจาก CheckBox รบกวนดูให้ทีครับ

   if(empty($YEAR))
  {echo "<script>alert('กรุณากรอกข้อมูลให้ครบด้วย');</script>";
			echo "<script>window.location='SearchUnfitAddEdit.php'</script>";}
	else{		
	  $YEAR = $_REQUEST['YEAR'];}
	  if(empty($COURSEID)){
		  echo "<script>alert('กรุณากรอกข้อมูลให้ครบด้วย');</script>";
			echo "<script>window.location='SearchUnfitAddEdit.php'</script>";}
			else{
  $COURSEID = $_REQUEST['COURSEID'];}
  if(empty($SECTORID)){
	  echo "<script>alert('กรุณากรอกข้อมูลให้ครบด้วย');</script>";
			echo "<script>window.location='SearchUnfitAddEdit.php'</script>";}
			else{
  $SECTORID = $_REQUEST['SECTORID'];}
  if(empty($TEACHERID)){
	  echo "<script>alert('กรุณากรอกข้อมูลให้ครบด้วย');</script>";
			echo "<script>window.location='SearchUnfitAddEdit.php'</script>";}
			else{$TEACHERID = $_REQUEST['TEACHERID'];}
			
			$a="หมดสิทธิ์สอบ";
			$b="มีสิทธิ์สอบ";
$objConnect = mysql_connect("localhost","root","1234") or die("Error Connect to Database");
$objDB = mysql_select_db("ge");
$objDB = mysql_query("SET NAMES 'utf8'");
$strSQL = "SELECT
property.ID,
property.`YEAR`,
property.SECTORID,
sector.SECTORNAME,
property.COURSEID,
cur_regcourse.COURSENAME,
property.TEACHERID,
teacher.TEACHERNAME,
property.STUDENTID,
studen.STUDENTNAME,
property.INELIGIBLE
FROM
property
Inner Join teacher ON teacher.TEACHERID = property.TEACHERID
Inner Join studen ON studen.STUDENTID = property.STUDENTID
Inner Join sector ON sector.SECTORID = property.SECTORID
Inner Join cur_regcourse ON cur_regcourse.COURSEID = property.COURSEID
WHERE

property.YEAR='$YEAR' AND
property.COURSEID='$COURSEID' AND
property.SECTORID='$SECTORID' AND
property.TEACHERID='$TEACHERID' AND
property.INELIGIBLE='$a' AND
property.INELIGIBLE!='$b' 

"; 

$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
?> 
   <form action="UfitAddEditSave.php" name="frmEdit" method="post">
<? 

	
	
$strSQL .=" order  by STUDENTID ASC LIMIT $Page_Start , $Per_Page";//
$objQuery = mysql_query($strSQL);

?>
<table width="97%" border="0" align="center">
  
  <tr>
    <td><h3 align="center">ยกเลิกสถาณะ หมดสิทธิ์สอบ ของนักศึกษา</h3></td>
  </tr>
  <tr>
    <td>
      
      
  <table width="100%" border="1">
    <tr>
      <th > <div align="center">รหัสนักศึกษา </div></th>
      <th > <div align="center">ชื่อ - นามสกุล </div></th>
      <th >กำหนดสถานะ</th>
      </tr>
  <?
$i =0;
while($data = mysql_fetch_array($objQuery))
{ $i=$i+1;
?>
    <tr>
      <td><div align="center"><input type="hidden" name="ID<?=$i;?>" size="5" value="<?=$data["ID"];?>"><?=$data["STUDENTID"];?></div></td>
      <td><?=$data["STUDENTNAME"];?></td>
      <td><div align="center">
        <input name="chkUnfit<?=$i;?>" type="checkbox" value="มีสิทธิ์สอบ" <? if($data["INELIGIBLE"]=="มีสิทธิ์สอบ"){echo"checked";}  ?> />
        มีสิทธิ์สอบ</div> </td>
      </tr> 
    
  <?
}
?>
  </table>
  <?
if($Num_Rows<=0){
	$error= "ไม่พบข้อมูล";}
?>
  <table width="97%" cellspacing="0">
  <tr>
    <td width="100%"><div align="center"><?=$error?></div></td>
    </tr>
    <tr>
      <td width="100%"><div align="center">
        <input name="submit" type="submit" value="submit"/>
        <input type="hidden" name="hdnLine" value="<?=$i;?>">
        </div></td>
      </tr>
    
  </table>
      
  </td>
  </tr>
 
</table>
</form>

$objConnect = mysql_connect("localhost","root","1234") or die("Error Connect to Database");
$objDB = mysql_select_db("ge");
$objDB = mysql_query("SET NAMES 'utf8'");
for($i=1;$i<=$_POST["hdnLine"];$i++)
	{
		$strSQL = "UPDATE property SET ";
		$strSQL .="INELIGIBLE = '".$_POST["chkUnfit$i"]."' ";
		$strSQL .="WHERE ID = '".$_POST["ID$i"]."' ";
		$objQuery = mysql_query($strSQL);
		
	}
echo "สถาณะได้ถูกบันทึกแล้ว";
?>