Using XPath or XParser could any one suggest me how i can append new attribute to XML from hash, Below i am listed the structure of XML source file and the code that i have done to check the existing attributes, Structure of my XML file is like this:-

<CONFIGURATION 
  <APPLICATION_SERVER>
       <RESOURCE_LIST>
      <PLATFORM_INDEPENDENT>
            <RESOURCE Id="res.wacgen" Source="INTERNAL">$(res.appl)</R
+ESOURCE>
    <RESOURCE Id="res.wacgenlib" Source="INTERNAL">$(res.appl)$(res.sl
+ash)all.4gm</RESOURCE>
    <RESOURCE Id="res.waclibext" Source="INTERNAL">4gs</RESOURCE>
    <RESOURCE Id="res.fcode" Source="INTERNAL">rt.2.10.01-1138</RESOUR
+CE>
    <RESOURCE Id="res.frunext" Source="INTERNAL">ifx</RESOURCE>
    <RESOURCE Id="res.db_type" Source="INTERNAL">msv</RESOURCE>

          </PLATFORM_INDEPENDENT>
        </RESOURCE_LIST>
      </APPLICATION_SERVER>
</CONFIGURATION>
[download]

And i am trying to check each attribute like this, my $source = '/sand/devel/sthapa/tmp/as.xcf-dist';

my $Tag_Resource ='/CONFIGURATION/APPLICATION_SERVER/RESOURCE_LIST/';
my $Tag_Resource_PI=$Tag_Resource.'PLATFORM_INDEPENDENT/RESOURCE';
    my $Tag_wnt=$Tag_Resource.'WNT/RESOURCE';
    my $os_res_group;

    my $parser=new XML::XPath->new(filename => $source);
    $parser or die "Unable to parse sourse file: $source\n";

    my $Set_Resource = $parser->find($Tag_Resource_PI);

    foreach my $resource ($Set_Resource->get_nodelist)
    {
        my $attribute=$resource->getAttribute('Id');
        my $child_node = $resource->getChildNodes();
        if (exists $$HRR_resource{$attribute})
        {
        print "Attribute exists: $attribute";
        }
        else
        {
         #Add attribute to XML
        }
[download]