Call up several books and clean their contents

[Viero]

Hello,
I am making a code to create a function that at the moment of pressing a button, exports the information of several books to a PDF and once finished, it deletes the data of some specific cells, however to make the call of those books I need to call it via URL, but it won’t let me call them, just doing them 1 by 1 and that’s very tedious … I don’t know if I’ll have to call them via URL
I leave the code that I am using where the “openBy URL ()” is where I must place the addresses of several books …
function clear_sheeds(){

var Activ = SpreadsheetApp.openByUrl(“Captura4 - Google Sheets”);

var uf = Activ.getLastRow();

var cel = Activ.getRange(“C11:C”).clearContent();

var cel2 = Activ.getRange(“F11:F”).clearContent();

}