# Setting directory in xml to environment variable

Hello,

Is there a way to use environment variables in the xml files? I am using 3.0.4 on Windows 2000. I have the following in my jetty-web.xml file:

jsp

scratchdir
c:\jboss\server\default\deploy\MyApp.ear\CompiledJsp

I have an environment variable:
set WEB_APPS_DIR=c:\jboss\server\default\deploy

I want to specify:
%WEB_APPS_DIR%\MyApp.ear\CompiledJsp

How can I accomplish this?

Thanks,
Dale