Command line option and skip page

I am creating a setup using NSIS which include some builtin pages and some custom page also.In that i want to show a custom page using install only if a command line is passed during install.How it can be done?
Example



!include "MUI.nsh"

!include nsDialogs.nsh



OutFile "myCustomPage.exe"

var installmethod

Page Custom MyCustomPage 

Page Custom MyCustomPage1 

Page Custom MyCustomPage3



Function MyCustomPage

 nsDialogs::Create 1044

 

     nsDialogs::Show

 

FunctionEnd

Function MyCustomPage1

 nsDialogs::Create 1044



     nsDialogs::Show



FunctionEnd

Function MyCustomPage3

 nsDialogs::Create 1044



     nsDialogs::Show

FunctionEnd

Section Dummy

SectionEnd

In the above example i have 3 pages.I want to shown only two pages MyCustomPage and MyCustomPage3 during normal install. If a command line(specif command line) passed then all 3 pages should appear during installation.how it can be done?