[RESOLVED] If checkbox = on help

[tHa-gRiM]

Re-Issue? <input name="reissue" type="checkbox" value="ON">
<br>

<?
if($reissue = "on")
{
	if ($loan_amount <= 99999)
{
	$percent = ($loan_amount * .00330);

	$total = ($percent);
	}
if ($loan_amount >= 100000)
{
	$prep = ($loan_amount - 100000);

	$percent = ($prep * .00300);

	$tpercent = ($percent + 575);

	$total = ($tpercent);
	}
if ($loan_amount >= 1000000)
{
	$prep = ($loan_amount - 1100000);

	$percent = ($prep * .00200);

	$ptotal = ($percent + 5325);

	$total = ($ptotal);
	}
if ($loan_amount >= 10000000)
{
	$prep = ($loan_amount - 16100000);

	$percent = ($prep * .00150);

	$ptotal = ($percent + 38525);

	$total = ($ptotal);
	}
}
if($reissue = "off")
{
if ($loan_amount <= 99999)
{
	$percent = ($loan_amount * .00575);

	$total = ($percent);
	}
if ($loan_amount >= 100000)
{
	$prep = ($loan_amount - 100000);

	$percent = ($prep * .00500);

	$tpercent = ($percent + 575);

	$total = ($tpercent);
	}
if ($loan_amount >= 1000000)
{
	$prep = ($loan_amount - 1100000);

	$percent = ($prep * .00250);

	$ptotal = ($percent + 5325);

	$total = ($ptotal);
	}
if ($loan_amount >= 5000000)
{
	$prep = ($loan_amount - 6100000);

	$percent = ($prep * .00250);

	$ptotal = ($percent + 17450);

	$total = ($ptotal);
	}
if ($loan_amount >= 10000000)
{
	$prep = ($loan_amount - 16100000);

	$percent = ($prep * .00200);

	$ptotal = ($percent + 38525);

	$total = ($ptotal);
	}
}

Why isnt it working, its ignore the different percentages in the "on" section all together

[neicedover1982]

if(isset($_POST['reissue'])) {
// it is selected
} else {
// it is not
}

[tHa-gRiM]

thanks