Could somebody see what is wrong that does not come to my eyes?

Question

Hello,
I can't see what is wrong with this code:
I have eleminated excessive codes to make it easier to read... When this code is run I can see the first 3 dialog of app.alert but nothing after than... I can see p is not equal to nP... or at least I should have fallen one time into the do While loop? shouldn't I?  The red app.alert is not displayed why?
var inch = 72;
try
{   nP = this.numPages;
    var p = 0;
    var x = 0.5;
    app.alert ('p='+ p);
    app.alert ('nP='+ nP);
    app.alert ('this.numPages='+ nP);
    do
       switch (nP)
          case 1:
               {app.alert ('case 1 nP = '+ nP);
               Add2LastPage();
               p += 1;
               break;}
          case nP > 1:
               {app.alert ('case nP > 1 = '+ nP);
               switch (p)
                   case 0:
                        x += 0.3;
                        p += 1;
                        break;}
                   default:
                        x += 0.3;
                        x += 0.3;
                        x += 0.3;
                        p += 1;
                        break;}
    while (p != nP);
    Add2LastPage();
catch (e)
app.alert(e);

Answer 1

Why not use a for loop to go thorugh your pages?
You can use the switch within the for loop.
Some comments within your code will show others what you are trying to accomplish.