Exporting JPG --> How to setup/get a higher DPI image

Hello-

I would really appreciate if any of you experts could help me on this matter. I am saving an InDesign file as JPG, however, the output generated is always 72 DPI even if I have indicated to get a Higher Quality.

The actual JavaScript function I am using is this:

function ExportAsJPG(inSaveDocumentPath)
{
app.jpegExportPreferences.jpegQuality = JPEGOptionsQuality.maximum;

currentDocument.exportFile(ExportFormat.jpg, File(inSaveDocumentPath), app.pdfExportPresets.item("[High Quality Print]"));
}

Any ideas or tips welcome!!!

Regards,

G.O.