Scala Lift sbt.bat でProxy認証

set SCRIPT_DIR=%~dp0
java -Dhttp.proxyHost= ^
-Dhttp.proxyPort= ^
-Dhttps.proxyHost= ^
-Dhttps.proxyPort= ^
-Dhttp.proxyUser= ^
-Dhttp.proxyPassword= ^
-XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=256m -Xmx512M -Xss2M -jar "%SCRIPT_DIR%\sbt-launcher.jar" %*