Adding CData to xml property

Need to add CDATA into XML Property element, but special character are getting added. Here is my code. Please give your thoughts on the same.
Here is the code.
String cDataTagStart="
<![CDATA[";
String cDataTagEnd="]]
>";
credentialsURL =cDataTagStart+credentialsURL+cDataTagEnd;
xmlContentOfMetaData = CredentialProvider.getInstance();
xmlContentOfMetaData.addProperty("Resource(-1).ResourceName", resourceName);
xmlContentOfMetaData.addProperty("Resource.ResourceURL", credentialsURL);

But Special characters are getting added
ResourceName>TESTRESOURCENAME</ResourceName>
<ResourceURL>\<![CDATA[TESTCredentialsURLS2]]\></ResourceURL>