Escape From Monkey Island

I'm not sure of the etiquette here, am I suppose to plagiarize your work or send an update in a reply. Anyway, by adding an else branch (and filling it with code from the Curse of Monkey Island script) I could install the GOG version of this game:

#!/bin/bash
# CHANGELOG
# [Quentin PÂRIS] (2012-05-17 17:22)
#   Updated to PlayOnLinux v4
# [Dadu042] (2020-01-29 21:00)
#   Wine Linux 1.2.3 -> 3.0.3
#   Improve POL_Shortcut
# CHANGELOG
[ "$PLAYONLINUX" = "" ] && exit 0
source "$PLAYONLINUX/lib/sources"
TITLE="Escape From Monkey Island"
PREFIX="Monkey4"
if [ "$POL_OS" = "Linux" ]; then
        WINEVERSION="3.0.3"
else
        WINEVERSION="1.2.3-16bits"
fi
POL_GetSetupImages
POL_SetupWindow_Init
POL_Debug_Init
POL_RequiredVersion "4.0.18" || POL_Debug_Fatal "$APPLICATION_TITLE 4.0.18 is required to install $TITLE"
POL_SetupWindow_presentation "$TITLE" "LucasArts" "http://www.lucasarts.com" "Quentin PÂRIS" "$PREFIX"
POL_SetupWindow_InstallMethod "CD,LOCAL"
POL_Wine_SelectPrefix "$PREFIX"
POL_Wine_PrefixCreate "$WINEVERSION"
POL_System_TmpCreate "Monkey4"
if [ "$INSTALL_METHOD" = "CD" ]; then
        POL_SetupWindow_message "$(eval_gettext 'Please insert the first game media into your disk drive')" "$TITLE"
        POL_SetupWindow_cdrom
        POL_SetupWindow_check_cdrom "Install/Setup.exe"
        POL_System_CopyDirectory "$CDROM" "$POL_System_TmpDir" "2518368"
        chmod -R 777 "$POL_System_TmpDir"
        POL_SetupWindow_wait "$(eval_gettext 'Please wait...')" "$TITLE"
        
        POL_SetupWindow_message "$(eval_gettext 'Please insert the second game media into your disk drive')" "$TITLE"
        POL_SetupWindow_cdrom
        POL_SetupWindow_check_cdrom "Install/Setup.tab"
        POL_System_CopyDirectory "$CDROM" "$POL_System_TmpDir" "2518368"
        chmod -R 777 "$POL_System_TmpDir"
        POL_SetupWindow_wait "$(eval_gettext 'Please wait...')" "$TITLE"
        
        POL_Wine_WaitBefore "$TITLE" --allow-kill
        POL_SetupWindow_message "$(eval_gettext 'Please insert the first game media into your disk drive')" "$TITLE"
        POL_SetupWindow_cdrom
        POL_SetupWindow_check_cdrom "Install/Setup.exe"
        POL_Wine_InstallCDROMCustom "$POL_System_TmpDir"
        POL_Wine_WaitBefore "$TITLE" --allow-kill
        POL_Wine "$POL_System_TmpDir/Install/Setup.exe"
        POL_Wine_reboot
else
        # Asking then installing from local setup file (e.g. from GOG)
        cd "$HOME"
        POL_SetupWindow_browse "$(eval_gettext 'Please select the setup file to run')" "$TITLE"
        SETUP_EXE="$APP_ANSWER"
        POL_Wine start /unix "$SETUP_EXE"
        POL_Wine_WaitExit "$TITLE"
        POL_Wine_reboot
fi
POL_System_TmpDelete
POL_Shortcut "Monkey4.exe" "$TITLE" "" "" "Game;"
if [ "$INSTALL_METHOD" = "CD" ]; then
        POL_Call POL_Function_NoCDWarning
fi
POL_SetupWindow_Close
exit 0