Using XML::Simple

[Bjorn Van Blanckenberg]

I have some elements in my xml that are empty but have attributes.
I would like that I can group the element in function of Attribute Name.
      <Layout Class="Parameter" ID="r060116_103344354_000026"  
Status="Available">
        <LayerList>
          <LayerDetails Name="nl-BE"/>
          <LayerDetails Name="fr-BE"/>
          <LayerDetails Name="nl-NL"/>
        </LayerList>
      </Layout>

I read in I get

$VAR1 = {
          'ID' => 'r060116_103344354_000026',
          'Status' => 'Available',
          'LayerList' => {
                           'LayerDetails' => [
                                               {
                                                 'Name' => 'nl-BE'
                                               },
                                               {
                                                 'Name' => 'fr-BE'
                                               },
                                               {
                                                 'Name' => 'nl-NL'
                                               }
                                             ]
                         },
          'Class' => 'Parameter'
        };


I would like it when the xml is readed in to became

{
        'ID' => 'r060116_103344354_000026',
        'Status' => 'Available',
        'LayerList' => {
                           'LayerDetails' => [ 'nl-BE', 'fr-BE', 'nl- 
NL' ]
                        },
        'Class' => 'Parameter'
   }
 }

I've tried to use
# KeyAttr => [ list ]
# KeyAttr => { list }
# GroupTags => { grouping tag => grouped tag }

even an combination of KeyAttri and GroupTags but don't get the  
desired output

Thanks Bjorn