How set document spread view as Actual Size ?

Hi Experts

When I create my InDesign file on MAC OS, It is not in actual size.

I want to set its View Actual Size using script.

I try

#target indesign

var myDocument = app.activeDocument;

var MyLayout=myDocument.layoutWindows();

var MylayoutWindow=MyLayout.lastItem();

MylayoutWindow.zoom=2053206906;  

But it not set Document spread  in actual size.

How set it using script ?

Thanks