🚀 go-pugleaf

I try to import a xml-file to a xmlElement and not the root. A xml-file was already imported before and after a few actions i want to import a specific part of the xml-file again with the merge option to set knew content

Here's my trail:
...
    myXmlImport = app.activeDocument.xmlImportPreferences;
    myXmlImport.createLinkToXML = false;
    myXmlImport.ignoreUnmatchedIncoming = false;
    myXmlImport.importStyle = 1481469289;
    myXmlImport.importToSelected = true;
    myXmlImport.removeUnmatchedExisting = false;
    myXmlImport.repeatTextElements = true;

...
app.activeDocument.xmlElements.item("templates").xmlElements.item("collection").select();
app.activeDocument.importXML(myFile);

Please help!