Mozilla Calendar/Lightning for Thunderbird (global)

<package id="lightning" name="Mozilla Lightning" revision="1" reboot="false" priority="1" timeout="100">
                <depends package-id="thunderbird"/> 
                <check type="file" condition="exists" path="%PROGRAMFILES%\Mozilla Thunderbird\extensions\{e2fda1a4-762b-4020-b5ad-a41df1933103}" />
                <install cmd='"%PROGRAMFILES%\Mozilla Thunderbird\thunderbird.exe" -install-global-extension "%PACKAGES%\thunderbird_add-on\lightning-0.3.win32.xpi"'>
                </install>
                <upgrade cmd='"%PROGRAMFILES%\Mozilla Thunderbird\thunderbird.exe" -install-global-extension "%PACKAGES%\thunderbird_add-on\lightning-0.3.win32.xpi"'>
                </upgrade>
                <remove cmd='cmd /c echo "How uninstall ONLY add-on?"'/>
</package>