updateข้อมูลโดยใช้ multiple checkbox แต่ข้อมูลไม่ลงdbเลยจะแก้ยังไงดีคะ

<tr>
			<td class="tdRight" width="25%"><b>KPIทั้งหมด :&nbsp;</b></td>
   <td class="tdLeft" width="75%"><table class="tableKPI" cellpadding="0" cellspacing="0">
   <?
	$strKPISelect = "SELECT kpiID, Target FROM kpi_year WHERE Year = '".$_GET["Year"]."'";
	$objKPISelect= mysql_query($strKPISelect);
        $strKPIAll = "Select kpiID,kpiname from kpis";
	$objKPIALL = mysql_query($strKPIAll);
	$Rows = mysql_num_rows($objKPIALL);
	$i = 1;

	while($objKPIALLResult = mysql_fetch_array($objKPIALL))
	{
	      $strKPISelect = "SELECT kpiID, Target FROM kpi_year WHERE Year = '".$_GET["Year"]."' and kpiID = '".$objKPIALLResult['kpiID']."'";
	      $objKPISelect= mysql_query($strKPISelect);
	      $RowSelect = mysql_num_rows($objKPISelect);
	     $objKPISelectResult = mysql_fetch_array($objKPISelect);														if($objKPISelectResult[0]){
?>
    <tr>
	<td><input type="checkbox" name="chkKPI[]" id="chkKPI<? echo $i;?>" value="<? echo $objKPIALLResult['kpiID']?>" onclick="return EnableTXT('chkKPI<? echo $i;?>','txtTarget<? echo $i;?>');" checked="checked">&nbsp;<? echo $objKPIALLResult['kpiname']?> &nbsp;</td>
	<td><input type="text" name="txtTarget[]" id="txtTarget<? echo $i;?>" size="10" class="txtEn" value="<? echo $objKPISelectResult['Target'];?>"><br></td>
     </tr>
<?}else{
?>
      <tr>
	<td><input type="checkbox" name="chkKPI[]" id="chkKPI<? echo $i;?>" value="<? echo $objKPIALLResult['kpiID']?>" onclick="return EnableTXT('chkKPI<? echo $i;?>','txtTarget<? echo $i;?>');">&nbsp;<? echo $objKPIALLResult['kpiname']?> &nbsp;</td>
	<td><input type="text" name="txtTarget[]" id="txtTarget<? echo $i;?>" size="10" disabled class="txtEn"><br></td>
	</tr>
<?}
$i = $i+1;
}
mysql_close();?>	
<input type='hidden' name='cntRow' value="<? echo $Rows;?>">	
</table>
</td>
</tr>

$txtYear=$_POST['txtYear'];
	$chkKPI=$_POST['chkKPI'];
	$txtTarget=$_POST['txtTarget'];
	$cntRow = $_POST['cntRow'];
	$year = $_POST['hidYear'];
	//echo count($chkKPI);
	$strChk = "Select kpiID from kpi_year where Year ='".$_GET['Year']."'";
	$objStrChk = mysql_query($strChk);
		for($i=0;$i<count($chkKPI);$i++)
		{
		     while($objResultChk = mysql_fetch_array($objStrChk))
		     {
			if($objResultChk['kpiID'] == $chkKPI[$i])
			{
						
			       echo $strSqlUpdate = "Update kpi_year set Target = '".$txtTarget[$i]."' where Year ='".$year."' and kpiID='".$chkKPI[$i]."'";
				echo "<br>";
				$objSqlUpdate = mysql_query($strSqlUpdate);

			}
			else
			{
				echo $strSqlInsert = "Insert into kpi_year (kpiyearID,kpiID,Year,Target) values ('','".$chkKPI[$i]."','".$txtYear."','".$txtTarget[$i]."') ";
				echo "<br>";
				$objSqlInsert = mysql_query($strSqlInsert);
			}
		}
				

			if(!$objSqlUpdate or !$objSqlInsert)
			{
				mysql_error();
			}
			else
			{
				header("LOCATION:kpiYearAll.php");
			}
		}