Help! Page numbering with this.numPages "Spawning"

i'm little confused on going on page numbering.

 

user selects how many pages generated "spawned" via drop down boxes. each pages gets numbered , there total number field gets populated code: this.numpages;

 

i understand page number starts out page 0 , continues there. being said because users using reader "11" know cant delete first page therefore have used following code reflect correct number of pages: this.numpages - 1;

 

the issue when pages populated shows total number of pages including page cant deleted, ie if user selects 3 pages created there total of 4 pages based on first page not being able deleted. correct total page number isn't being changed until start inputing data fields. idea on why might be?

 

i have attempted add calculatenow() function without success.

 

the total number page text box named same on each page.

 

 

 

thanks help.

 

 

nathan

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