Finde node i XML

Jeg skal finde en bestemt node i noget XML men kan ikke helt lykkes med det:

Jeg har prøvet følgende kode, men det giver intet resultat:

XmlDocument document = new XmlDocument();
document.LoadXml(xml);

XmlNodeList list= document.SelectNodes("Node[@Value='13']");

Her er mit XML:

<Tree>
    <Node Text="roden" Value="1" ImageUrl="images/13.gif" ExpandMode="ServerSide" status="laast">
        <Node Text="DK" Value="2" ImageUrl="images/folder.gif" ContextMenuName="standard" ExpandMode="ServerSide" status="laast">
            <Node Text="Standard" Value="11" ImageUrl="images/folder.gif" ContextMenuName="standard" ExpandMode="ServerSide" status="laast">
                <Node Text="Topmenu" Value="13" ImageUrl="images/folder.gif" ContextMenuName="standard" ExpandMode="ServerSide" status="laast">
                    <Node Text="This" Value="16" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                    <Node Text="..." Value="18" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                    <Node Text="Læs om" Value="19" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                    <Node Text="Rediger" Value="34" ImageUrl="images/deaktiv.gif" ContextMenuName="standard" status="aaben" />
                    <Node Text="salg" Value="17" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                </Node>
                <Node Text="Bundmenu" Value="14" ImageUrl="images/folder.gif" ContextMenuName="standard" ExpandMode="ServerSide" status="laast">
                    <Node Text="Kontakt os" Value="5" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                    <Node Text="Information om..." Value="6" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" ExpandMode="ServerSide" status="aaben">
                        <Node Text="h" Value="9" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                        <Node Text="Annoncering" Value="113" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                        <Node Text="hmmm" Value="114" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" ExpandMode="ServerSide" status="aaben">
                            <Node Text="kontaktformular" Value="33" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                        </Node>
                    </Node>
                    <Node Text="Betingelser" Value="8" ImageUrl="images/9.gif" ContextMenuName="standard_deaktiv" status="aaben" />
                </Node>
            </Node>
        </Node>
    </Node>
</Tree>