a not working section RO change :(

i checked on the forum but the solutions are not working 🙁
I want my software installers to be able to isntall source code if the archive with sources (source.zip) is available in the same folder

so i have 2 sections : 1 which is RO and selected for isntalling the software, one which i want to dynamically be enabled or disabled if source.zip is existing.

so in .onInit i'm checking the existance of the file and changing the section's flag .. but i don't see any result in my installer 🙁

here is my script :

;--------------------------------
; Includes
!include "MUI.nsh"
!include "Sections.nsh"

;--------------------------------
; Parameters
Name "software"

OutFile "Install.exe"
!define MUI_HEADERIMAGE true
!define MUI_HEADERIMAGE_RIGHT true
!define MUI_COMPONENTSPAGE_SMALLDESC

CRCCheck off
InstallDir ""



;--------------------------------
; Pages

!define MUI_ABORTWARNING
!insertmacro MUI_PAGE_WELCOME
!insertmacro MUI_PAGE_COMPONENTS
!insertmacro MUI_PAGE_INSTFILES
!insertmacro MUI_PAGE_FINISH
!insertmacro MUI_LANGUAGE "French"


Function .onInit
ifFileExists "$EXEDIR\source.zip" SOURCE_ok
!insertmacro SetSectionFlag SOURCE ${SF_RO}

SOURCE_ok:
FunctionEnd


;--------------------------------
; Sections

Section "Software" SOFT
SectionIn RO
; installing ...
Sectionend


Section /o "Source code" SOURCE
; installing ...
Sectionend


thanks

!insertmacro SetSectionFlag SOURCE ${SF_RO}
Should be:
!insertmacro SetSectionFlag ${SOURCE} ${SF_RO}

-Stu

I attached script to this thread see my post there http://forums.winamp.com/showthread.php?threadid=224844 , it also allows to skip sections page if no additional files (and skips finish page if launches dotnetfx.exe).