For some reason when I append element to xml file, it's written in one line, i.e. not formatted

Original xml:

<configuration>
 <property>
    <name>test1</name>
 </property>
</configuration>

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And the code is: 
my $parser =XML::LibXML->new();
my $doc    =$parser->parse_file($file) or die $!;
my $root   =$doc->getDocumentElement;

my $searchPath="/configuration";
my ($val)=$root->findnodes($searchPath);

my $propTag=$doc->createElement("property");
$val->appendChild($propTag);

my $nameTag=$doc->createElement("name");
$nameTag->appendTextNode($name);
$propTag->appendChild($nameTag);

$doc->setDocumentElement($root);
$doc->toFile($file,1);

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Which resulted with: 
<configuration>
 <property>
    <name>test1</name>
 </property>
  <property><name>test2</name></property></configuration>

[download]
instead of: 
<configuration>
 <property>
    <name>test1</name>
 </property>
 <property>
   <name>test2</name>
  </property>
 </configuration>

[download]

In reply to Problem to add xml element in a formatted structure by gdanenb

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
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