Understanding the object model yh

Question

Dear all,
I'm building a simple PDF export script. Before exporting the script will search the flattenerpreset collection for a specific preset - if found use, else alert and exit. For this purpose I've located the class FlattenerPresets and the method "everyItem(): Array of FlattenerPreset". But when testing app.FlattenerPresets.everyItem(); I receive the error: Object does not support property or method 'FlattenerPresets'. 'Application' instead of 'app' gives me a different error: undefined is not an object.
My apologies for bugging you gentlemen with another banality. PLease bear with the beginner :-)
Sincerly,
Rasmus

Answer 1

Dear David and Kees,
Do you have a hint on how to use the returned variable from my SelecFlattenerPreset function in my following exportSinglePages function? It appears that InDesign uses the flatterpreset defined in the joboptions file and not the string I serve to the app.pdfExportPreferences.appliedFlattenerPreset property.
function selectFlattenerPreset() {
try {
var myFlattenerPresets = app.flattenerPresets;
var thePref = "GWG_2400";
var i = 0;
while (i < myFlattenerPresets.length && myFlattenerPresets[i].name != thePref) i++; {
if (i == myFlattenerPresets.length) {
alert(thePref + " can't be found");
else {
return thePref;
function exportSinglePages() {
[snip variables]
for(var myCounter = 0; myCounter < myDocument.pages.length; myCounter++){
myPageName = myDocument.pages.item(myCounter).name;
app.pdfExportPreferences.pageRange = myPageName;
app.pdfExportPresets.appliedFlattenerPreset = "GWG_2400"; // <- returned variable goes here - but how?
myDocument.exportFile(ExportFormat.pdfType, myFile, false, myPDFPreset);