$_POST from a field in HTML form is blank

Linux
PHP 4

?php
include 'db.php';
$db = mysql_select_db("$database_name", $connection)
or die("Couldn't select database.");

// Define post fields into simple variables
$TDesca = $_POST['CShipT'];
$TDesca .= ": ";
$Tdesca .= $_POST['Distm'];
$Tdesca .= $_POST['Meas'];
$TDesca .= "Par: ";
$TDesca .= $_POST['Par'];
$TDesca .= ": ";
$TDesca .= "Rating: ";
$Tdesca .= $_POST['Courat'];
//'Rating: ' + $_POST['courat'] + ',Slope: ' + $_POST['sloprat']+'<br>'+$_POST['ment']+': ' + $_POST['distm1']+$_POST['dist1']+',Par: '+$_POST['par1']+',Rating: '+$_POST['courat1']+',Slop: '+$_POST['sloprat1']+'<br>'+$_POST['ment1']+' '+$_POST['distm2']+' '+$_POST['dist2']+',Par: '+$_POST['par']+',Rating: '+$_POST['courat2']+',Slope: '+$_POST['sloprat']+'<br>';
//$Td = addslashes($Tdesca);
$TDesc1 = $_POST['TDesc1'];
$Td1 = addslashes($TDesc1);
$TDesc2 = $_POST['TDesc2'];
$Td2 = addslashes($TDesc2);

$Nghgolf = $_POST['Nghgolf'];
$CourseD = $_POST['CourseD'];
$TypeC = $_POST['TypeC'];
$Fairway = $_POST['FairwayG'];
$Green = $_POST['Green'];
$Dist = $_POST['Distme'];
$DistM = $_POST['DistMa'];

/* Do some error checking on the form posted fields */
if(!$GolfClub){
echo 'You did not submit the following required information! <br />';
if(!$glfclbn){
echo "Golf Club Name is a required field. Please enter it below.<br />" . $TDesca;
}
include 'glfdet.htm'; // Show the form again!
/* End the error checking and if everything is ok, we'll move on to
creating the user account */
exit(); // if the error checking has failed, we'll exit the script!
}

// Enter info into the Database.
// $info2 = htmlspecialchars($info);
$sql = mysql_query("INSERT INTO glfdetails (golfclubname,howto,nocourse,Description,Desc1,Des c2,CourseDet,CourseDet1,CourseDet2,CourseD,Courset ype,Nightglf,FwayGrass,Greens,Dist,DistMarker)
VALUES('$GolfClub','$Howtoos','$NCourse','$Desc',' $courname','$courname1','$CShipT','$Td1','$Td2','$ CourseD','$TypeC','$NghGolf','$fairway','$Greens', '$Dist','$DistM')") or die (mysql_error());
//
//
if(!$sql){
echo 'There has been an error writing to the datbase. Please contact the webmaster.';
}
include 'glfdet.htm';
?>

the fields from my HTML form Distm and Meas when posted has blank values but I have already input a value in these fields. I do not understand why it did not capture the value. Can anyone help?
Thanks.
Bob