One way I was considering was when placing the page, I would apply a master page.

I would then check against that master page, C-Master, and if it is the C-Master page, have the code bypass the sections that call to the variable.

for(var i = o; i < PageLength-1; i++){

//HOW DO I CHECK WHAT THE MASTER PAGE IS?

var masterpage = //need to determine the master page of newDoc.pages.item(i)

    if(masterpage  != "C-Master"){

          var highlights= newDoc.pages.item(i).pageItems.item("CompanyHighlights").contents;

          var advertising = newDoc.pages.item(i).pageItems.item("Advertising").contents;

          if(advertising == "Y")

          {

               //add blank page before this page

               //Apply C-Master as master page.

          }

     }else{alert("This page is an advertisement page")}

}

Can someone explain how I would detect the master page? is it

var masterpage = newDoc.pages.item(i).appliedMaster;

???

Thanks Hans, I actually got it working last night: I had to run a double if statement to check the Master page and move the counter var to a global var, and then add 1 to the counter "i" since I was adding a page, and add 1 to the PageLength so the for loop can continue on the pages that were moved ahead a page number by adding a page...not the best solution, but it works and I'm on a deadline. Thank you for trying to help though.

//make i a global variable

var i = 0;

for(i = 0; i < PageLength-1; i++){

//define master page of current page in the loop

var masterpage = newDoc.pages.item(i).appliedMaster.name;

//if its C-Master, skip it

    if(masterpage  != "C-Master"){

       //if it contains the merged Advertising field add a page

      var advertising = newDoc.pages.item(i).textFrames.item("Advertising").contents;

          if(advertising == "Y")

          {

               //Add a page.

               newDoc.pages.add(LocationOptions.before, newDoc.pages.item(i) );

               newDoc.pages.item(i).appliedMaster =app.activeDocument.masterSpreads.item("C-Master");

               i=i+1;

               PageLength = PageLength+1;

          }

var masterpageAgain = newDoc.pages.item(i).appliedMaster.name;

            if(masterpageAgain  != "C-Master"){

               var highlights=newDoc.pages.item(i).textFrames.item("CompanyHighlights").contents;

         }

     }

}