Script to: Make defaults specific to camera serial number? How?

Hi, found it as well and here is a script to set it to true.

#target bridge
var crsPrefs = new File( Folder.userData + "/Adobe/CameraRaw/Defaults/Preferences.xmp" );
setMetadata(crsPrefs);
function setMetadata( file){
try{
if (ExternalObject.AdobeXMPScript == undefined) ExternalObject.AdobeXMPScript = new ExternalObject("lib:AdobeXMPScript");
  if(file.exists){
     file.open('r');
     file.encoding = "UTF8";
     file.lineFeed = "unix"; 
     file.open("r", "TEXT", "????");
     var xmpStr = file.read();
     file.close();
     }else{
         var xmpStr='';
         }
     var xmp = new XMPMeta( xmpStr );
   xmp.deleteProperty("http://ns.adobe.com/camera-raw-settings/1.0/", "DefaultsSpecificToSerial");
    xmp.setProperty("http://ns.adobe.com/camera-raw-settings/1.0/", "DefaultsSpecificToSerial","True");
     file.open('w');
     file.encoding = "UTF8";
     file.lineFeed = "unix"; 
     file.write( xmp.serialize() );
     file.close();
     }catch(e){alert(e+"-"+e.line);}
};