I'm using tDom to loop through some XML and pull out each element's text().

    set xml {
<systems>
 <object>
  <type>Hardware</type>
  <name>Server Name</name>
  <attributes>
   <vendor></vendor>
  </attributes>
 </object>
 <object>
  <type>Hardware</type>
  <name>Server Two Name</name>
  <attributes>
   <vendor></vendor>
  </attributes>
 </object>
</systems>
};

    set doc  [dom parse $xml]
    set root [$doc documentElement]

    set nodeList [$root selectNodes /systems/object]

    foreach node $nodeList {

     set nType  [$node selectNodes type/text()]
     set nName  [$node selectNodes name/text()]
     set nVendor [$node selectNodes attributes/vendor/text()]

     # Etc...
     puts "Type: " 
     puts [$nType data] 

     # Etc ..

     puts [$nVendor data]
    }

But when it tries to print out the Vendor, which is empty, it thows the error invalid command name "". How can I ignore this and just set $nVendor to an empty string?