}
if(!empty($_POST['new_high']) || !empty($_POST['new_low']) || !empty($_POST['new_discount'])){
if(empty($_POST['new_discount']) || (empty($_POST['new_low']) && empty($_POST['new_high']))){
$error_msg .= "You must enter a value for high, low and discount to add a new structure line!\n";
}else{
if(empty($_POST['new_low'])) $_POST['new_low'] = 0;
if(empty($_POST['new_high']) || trim($_POST['new_high']) == '+') $_POST['new_high'] = 0;
$_POST['new_discount'] = trim($_POST['new_discount']);
if($_POST['new_discount'][0] != '-') $_POST['new_discount'] = '-'.$_POST['new_discount'];
$line = new SI_RateStructureLine();
$line->high = (int)$_POST['new_high'];
$line->low = (int)$_POST['new_low'];
$line->discount = (float)$_POST['new_discount'];
$line->rate_structure_id = $rate_structure->id;
if($rate_structure->validateNewLine($line) === FALSE){
$error_msg .= $rate_structure->getLastError();
}else{
if($line->add() === FALSE){
$error_msg .= "Error adding new structure line!\n";
debug_message($line->getLastError());
}
$lines = $rate_structure->getLines();
}
}
}
if(empty($error_msg) && $_POST['save'] == 'Save'){
goBack();
}
}else{
