Re: EPUB - not able to add cover images

I'm using the below code to add the cover image:

var myDoc = app.activeDocument;
var myDocName = myDoc.name;
myDocName = myDocName.replace(".indd",".epub");

myDoc.epubExportPreferences.epubCover = EpubCover.EXTERNAL_IMAGE;
myDoc.epubExportPreferences.coverImageFile = '/E/9780470671955.jpg';
app.jpegExportPreferences.jpegQuality = JPEGOptionsQuality.MAXIMUM;

Could anyone please check and confirm?