Why coordinate change of first page on spread when reframe second page ?

hi experts

i want reframe spread pages.

after reframe first page when reframe second page change y-axis of first page.

how prevent change first page coordinate?

i using :

 

var mydocument = app.activedocument;

with(mydocument.viewpreferences)

{

    horizontalmeasurementunits = measurementunits.points;

    verticalmeasurementunits = measurementunits.points;

}

var mypage = mypages.lastitem();

var myy1 = 0;

var myx1 = 0;

var myy2 = 647.648;

var myx2 = 431.766;

mypage.reframe(coordinatespaces.inner_coordinates, [[myx1 , myy1], [myx2 ,myy2]]);

 

 

mydocument.spreads.item(1).allowpageshuffle = false;   

var page=mydocument.spreads.item(1).pages.lastitem();

var pages= mydocument.pages.add(locationoptions.after,page);

var mypage=mydocument.spreads.item(1).pages.lastitem();

var myy1 = 0;

var myx1 = 0;

var myy2 = 647.648;

var myx2 = 431.766;

mypage.reframe(coordinatespaces.inner_coordinates, [[myx1 , myy1], [myx2 ,myy2]]);

 

while x1,y1,x2,y2 same both pages.

 

thanks;

hi,

 

not expert 1 knows how can hurt...

trying find logic here gave me headacke, solusion use page.resize() method (more options)

in case maybe:

 

resize_arr = [widht, height];

page.resize(

                    coordinatespaces.inner_coordinates,

                    anchorpoint.center_anchor,

                    resizemethods.replacing_current_dimensions_with,

                    resize_arr

                    );

 

could help...?

or around this...?

 

rgds

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