var theDoc = app.documents.add(); 
var theObjStyle  = theDoc.objectStyles.add({name:"style"}); 
// das funktioniert nicht 
theObjStyle.objectEffectsEnablingSettings.enableDropShadow = true; 

#target indesign 
main(); 
 
function main() { 
	var doc = app.documents.add(); 
	var rec = doc.pages[0].rectangles.add({geometricBounds: [10, 10, 100, 100] }); 
	var os = doc.objectStyles.add( {name: "Schattentest"} ); 
	os.transparencySettings.dropShadowSettings.distance = "2 mm"; 
	os.transparencySettings.dropShadowSettings.mode = ShadowMode.DROP; 
	os.strokeTransparencySettings.bevelAndEmbossSettings.applied = true; 
	os.strokeWeight = "5 pt"; 
	rec.applyObjectStyle( os, true, true); 
}