Hello.could you help me?

[Zevet]

I recently learned this software and successfully implemented my installer with background music.Here is my code:
; ########################################
; # Graphical Installer for NSIS #
; # Version 4.10.01 (Webka) #
; # Copyright (c) 2006 - 2021 #
; # unSigned, s. r. o. #
; # http://www.graphical-installer.com #
; # http://www.unsigned.sk #
; ########################################

; Script generated with Graphical Installer Wizard for NSIS (v1.15.01)

; Unique identifier of project:
; GRAPHICAL_INSTALLER_PROJECT_UID (was defined): {My application-1.0-My company, Inc.-http://www.mycompany.com #15696175104 |65998417920 @ 2021/2/11 14:32:16}

; Included file for Modern UI 2
!include "MUI2.nsh"

; Included file with graphic settings
!include "mythird.graphics.nsh"

; Included file with Graphical Installer functions
!include "${NSISDIR}\Graphical Installer\GraphicalInstaller_functions.nsh"

; Graphical Installer Wizard common defines
!define PRODUCT_NAME "Heroes III map Atlantic Revolution setup"
!define PRODUCT_VERSION "1.0"
!define PRODUCT_PUBLISHER "@Zevet Zheng"
!define PRODUCT_WEB_SITE "http://www.Maps4hero.com"

Name "${PRODUCT_NAME}"
OutFile "Heroes III map Atlantic Revolution setup.exe"
InstallDir "Select your Heroes 3 game root directory"
Caption "${PRODUCT_NAME}"
ShowInstDetails show
BrandingText "Heroes III epic map series"
RequestExecutionLevel user

; ===================
; Installer pages
; ===================

; Comment out this line if You do not want to show confirm dialog when Cancel button is pressed
!define MUI_ABORTWARNING
!define MUI_WELCOMEPAGE_TITLE_3LINES
; Welcome page
!insertmacro MUI_PAGE_WELCOME
; License page
!define MUI_PAGE_CUSTOMFUNCTION_SHOW GraphicalInstallerRedraw
!insertmacro MUI_PAGE_LICENSE "..\..\..\Program Files (x86)\NSISeng\Graphical Installer\readme.txt"
; UI for Installer and Uninstaller
${GraphicalInstallerChangeUI}
XPStyle on
; Components page
!define MUI_PAGE_CUSTOMFUNCTION_SHOW GraphicalInstallerRedraw
!insertmacro MUI_PAGE_COMPONENTS
; Directory page
!define MUI_PAGE_CUSTOMFUNCTION_SHOW GraphicalInstallerRedraw
!insertmacro MUI_PAGE_DIRECTORY
; InstFiles page
!define MUI_PAGE_CUSTOMFUNCTION_SHOW GraphicalInstallerRedraw
!insertmacro MUI_PAGE_INSTFILES
; Finish page
!define FINISHPAGE_NOAUTOCLOSE
!insertmacro MUI_PAGE_FINISH

; ======================
; Language settings
; ======================
!insertmacro MUI_LANGUAGE "English"
; Reserve files

ReserveFile "${NSISDIR}\Plugins\x86-unicode\splash.dll"
ReserveFile "${NSISDIR}\Plugins\8.bmp"

ReserveFile "${NSISDIR}\Plugins\x86-ansi\system.dll"
ReserveFile "${NSISDIR}\Plugins\ElemTown.wav"

ReserveFile "${NSISDIR}\Plugins\x86-unicode\splash.dll"
ReserveFile "${NSISDIR}\Plugins\x86-ansi\system.dll"
ReserveFile "${NSISDIR}\Plugins\VIVE.mp3"
!insertmacro MUI_RESERVEFILE_LANGDLL

; Installer properties
VIProductVersion "4.10.0.1"
VIAddVersionKey /LANG=${LANG_ENGLISH} "ProductName" "${PRODUCT_NAME}"
VIAddVersionKey /LANG=${LANG_ENGLISH} "Comments" "Graphical Installer. Copyright (c) 2006 - 2021 unSigned, s. r. o. http://graphical-installer.com/"
VIAddVersionKey /LANG=${LANG_ENGLISH} "CompanyName" "${PRODUCT_PUBLISHER}"
VIAddVersionKey /LANG=${LANG_ENGLISH} "LegalCopyright" "Made by ${PRODUCT_PUBLISHER}"
VIAddVersionKey /LANG=${LANG_ENGLISH} "FileDescription" "${PRODUCT_NAME}"
VIAddVersionKey /LANG=${LANG_ENGLISH} "FileVersion" "${PRODUCT_VERSION}"
VIAddVersionKey /LANG=${LANG_ENGLISH} "ProductVersion" "${PRODUCT_VERSION}"
VIAddVersionKey /LANG=${LANG_ENGLISH} "InternalName" "Heroes III map《Atlantic Revolution》"
VIAddVersionKey /LANG=${LANG_ENGLISH} "LegalTrademarks" "Copyright (c) 2021 ${PRODUCT_PUBLISHER}"
VIAddVersionKey /LANG=${LANG_ENGLISH} "OriginalFilename" "《Atlantic Revolution》"

; Language strings - captions of sections
LangString DESC_Section00 ${LANG_ENGLISH} " " ; No description
LangString DESC_Section01 ${LANG_ENGLISH} ""

; =================
; Install Data
; =================

; Invisible section - required for proper initialization, do not delete this section!
Section "" Section00
SectionIn RO
; Initialization of Install page
${GraphicalInstallerInitInstallPage}
SectionEnd

Section "Map files" Section01
SetOutPath "$INSTDIR\data"
SetOverwrite try
File "..\Desktop\a\data\HPL000el.pcx"
File "..\Desktop\a\data\HPL000Kn.pcx"
File "..\Desktop\a\data\HPL000pl.pcx"
File "..\Desktop\a\data\HPL000Sh.pcx"
File "..\Desktop\a\data\HPL001el.pcx"
File "..\Desktop\a\data\HPL001Kn.pcx"
File "..\Desktop\a\data\HPL001pl.pcx"
File "..\Desktop\a\data\HPL001Sh.pcx"
File "..\Desktop\a\data\HPL002el.pcx"
SetOutPath "$INSTDIR\maps"
File "..\Desktop\a\maps\Atlantic Revolution.h3m"
SetOutPath "$INSTDIR\mp3"
File "..\Desktop\a\mp3\ElemTown.mp3"
File "..\Desktop\a\mp3\CstleTown.mp3"
SetOutPath "$INSTDIR"
File "..\Desktop\a\aa.txt"
SectionEnd

Section -Post
SectionEnd

Function .onGUIEnd
; Unloading of GraphicalInstaller plugin
GraphicalInstaller::UnInitButtons
FunctionEnd

Function .onInit
InitPluginsDir
File "/oname=$PLUGINSDIR\Splash_8.bmp" "${NSISDIR}\Plugins\8.bmp"
File "/oname=$PLUGINSDIR\Splash_8.wav" "${NSISDIR}\Plugins\ElemTown.wav"
advsplash::show 9500 3850 850 -1 "$PLUGINSDIR\Splash_8"
Pop $0
File "/oname=$PLUGINSDIR\bgm_VIVE.mp3" "${NSISDIR}\Plugins\VIVE.mp3"
System::Call "winmm.dll::mciSendString(t 'OPEN $PLUGINSDIR\bgm_VIVE.mp3 TYPE MPEGVIDEO ALIAS BGMUSIC', t .r0, i 130, i 0)"
System::Call "winmm.dll::mciSendString(t 'PLAY BGMUSIC NOTIFY REPEAT', t .r0, i 130, i 0)"
FunctionEnd

Function un.onGUIEnd
; Unloading of GraphicalInstaller plugin
GraphicalInstaller::UnInitButtons
System::Call "winmm.dll::mciSendString(t 'STOP BGMUSIC',t .r0,i 130,i 0)"
System::Call "winmm.dll::mciSendString(t 'CLOSE BGMUSIC',t .r0,i 130,i 0)"
FunctionEnd
-----------------------------------------------------------------------------------------------------
and the "mythird.graphics.nsh":
; ########################################
; # Graphical Installer for NSIS #
; # Version 4.10.01 (Webka) #
; # Copyright (c) 2006 - 2021 #
; # unSigned, s. r. o. #
; # http://www.graphical-installer.com #
; # http://www.unsigned.sk #
; ########################################
; # Graphics file #
; ########################################

; *****************************************************************************
; * This file contains settings for graphical interface. Modify them freerly. *
; * Read enclosed documentation (and comments in scripts) for more details. *
; *****************************************************************************

; Script generated with Graphical Installer Wizard for NSIS (v1.15.01)
!echo "Graphical Installer for NSIS v4.10.01 (Webka). Copyright (c) 2006 - 2021 unSigned, s. r. o. Graphics file."

; Unique identifier of project: (Comment out this symbol to switch the design of installer)
!define GRAPHICAL_INSTALLER_PROJECT_UID "{My application-1.0-My company, Inc.-http://www.mycompany.com #15696175104 |65998417920 @ 2021/2/11 14:32:16}"

; Compression
SetCompressor bzip2

; Installer icon
!define MUI_ICON "${NSISDIR}\888.ico"
; Uninstaller icon
!define MUI_UNICON "${NSISDIR}\Contrib\Graphics\Icons\modern-uninstall.ico"

; License page selection

; Installer background picture
!define GRAPHICAL_INSTALLER_BACKGROUND_BITMAP "..\..\..\Program Files (x86)\NSISeng\Graphical Installer\Skins\brown-skin.jpg" ; 690x496 px
!define GRAPHICAL_INSTALLER_SMALL_BITMAP "..\..\..\Program Files (x86)\NSISeng\Graphical Installer\Skins\brown-skin-inner.jpg" ; 450x228 px

; Color of labels in installer - all visible texts. Format: 0xRRGGBB
!define GRAPHICAL_INSTALLER_LABELS_TEXT_COLOR "0xFFFFFF"
; Color of headers (usually at the top of page)
!define GRAPHICAL_INSTALLER_HEADER_TEXT_COLOR "0xFFFFFF"

; See documentation for details about creating button picture
!define GRAPHICAL_INSTALLER_BUTTON_BITMAP "..\..\..\Program Files (x86)\NSISeng\Graphical Installer\Buttons\button-1.bmp" ; 83x104 px - 4 states: normal, focused, pressed, disabled

; Color for button texts for Normal/Focused/Pressed/Disabled state. Format: 0xRRGGBB
!define GRAPHICAL_INSTALLER_BUTTONS_TEXT_COLOR "0xFF0000"
!define GRAPHICAL_INSTALLER_BUTTONS_TEXT_COLOR_FOCUSED "0x000000"
!define GRAPHICAL_INSTALLER_BUTTONS_TEXT_COLOR_PRESSED "0x000000"
!define GRAPHICAL_INSTALLER_BUTTONS_TEXT_COLOR_DISABLED "0x000000"

; End of file (EOF)
The question is,how do I add multi-language installation options, where do I add them, and what is the codes?

[Anders]

NSIS\Examples\Modern UI\MultiLanguage.nsi

[Zevet]

Can you directly tell me which sentences should be added? I can't understand the example，thanks.

[Anders]

That is a very simple example, if you cannot understand it then you need to go back to Example1.nsi and read NSIS.chm before asking another question.

[Zevet]

I really can't do it,could anyone add lines of French for example in my work plz.Then I can do the rest languages myself .Thanks!