var CopyrightStatus = "True"; 
var CopyrightNotice = "Copyright(C) 2006, Example Systems, Inc." 
var CopyrightInfoURL = "http://www.example.com" 
var meta = this.metadata; 
var myXMPData = new XML(meta); 
myx = new Namespace("adobe:ns:meta/"); 
myrdf = new Namespace("http://www.w3.org/1999/02/22-rdf-syntax-ns#"); 
mypdf = new Namespace("http://ns.adobe.com/pdf/1.3/"); 
myxap = new Namespace("http://ns.adobe.com/xap/1.0/"); 
mydc = new Namespace("http://purl.org/dc/elements/1.1/"); 
myxapRights = new Namespace("http://ns.adobe.com/xap/1.0/rights/"); 
var p = myXMPData.myrdf::RDF.myrdf::Description; 
/* 
We test whether this element has a value already, if no, we assign it a 
value, otherwise we assign it another value. 
*/ 
if (p.mydc::rights.myrdf::Alt.myrdf::li.toString() == "") { 
p[0] += <rdf:Description rdf:about="" 
xmlns:dc="http://purl.org/dc/elements/1.1/" 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"> 
<dc:rights> 
<rdf:Alt> 
<rdf:li xml:lang="x-default"> 
{CopyrightNotice} 
</rdf:li> 
</rdf:Alt> 
</dc:rights> 
</rdf:Description> 
} else 
p.mydc::rights.myrdf::Alt.myrdf::li = CopyrightNotice; 
/* 
Some elements are converted into attributes, so we need to first test 
whether the xapRights:Marked attribute is present, if not, we add it in as an 
element; otherwise, if the attribute is present, we update the attribute. 
Acrobat changes certain elements into attributes; the xapRights:Marked and 
xapRights:WebStatement are two such examples, but dc:rights above is one 
that is not changed into an attribute. 
*/ 
if (p.@myxapRights::Marked.toString() == "" ) { 
p[0] += <rdf:Description rdf:about="" 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
xmlns:xapRights="http://ns.adobe.com/xap/1.0/rights/"> 
<xapRights:Marked>{CopyrightStatus}</xapRights:Marked> 
<xapRights:WebStatement> {CopyrightInfoURL} </xapRights:WebStatement> 
</rdf:Description> 
} else { 
p.@myxapRights::Marked = CopyrightStatus; 
p.@myxapRights::WebStatement = CopyrightInfoURL; 
} 
// Convert myXMPData into a string 
myNewXMPStr=myXMPData.toXMLString(); 
// and assign it to the document metadata 
this.metadata = myNewXMPStr;