about override all page

Located in the master page

object style applied to a text frame (myobjstyle1)

if only in the "Test" writes

override it in all pages

How to script

var myDocument = app.activeDocument;    
var TotalPages = (myDocument.pages.count());    
for(var CurrentPage=0; CurrentPage < TotalPages; CurrentPage++) {    
     OverrideMasterItems();    
}    
  function OverrideMasterItems() {  
    var theActiveOS = myDocument.objectStyles.item("myobjstyle1");
 
    var allItems = myDocument.pages[CurrentPage].appliedMaster.pageItems.everyItem().getElements();    
    for(var i=0;i<allItems.length;i++){    
        try{  
            if (allItems.appliedObjectStyle == theActiveOS) {
                  //if(allItems.contents = "Test"                     //???
                allItems.override(myDocument.pages[CurrentPage]);  
            }  
        }   
        catch(e){}    
    }   
}