Where to define <Environment...> elements in JBoss

I try to define environment entries in JBoss 5.1 and added following to the server/default/deploy/jbossweb.sar/context.xml file:

<Environment type="java.lang.String" name="name" value="value" />

Following error occurs on startup:

2010-01-26 14:50:08,383 ERROR [org.jboss.web.tomcat.service.deployers.JBossContextConfig] (main开发者_开发问答) XML error parsing: context.xml org.jboss.xb.binding.JBossXBException: Failed to parse source: Resource cannot appear in this position. Expected content of Context is unordered_sequence: attributes? InstanceListener* Realm? Parameters* Manager? Loader? Valve* SessionCookie? Resources? Listener*

Where may I define environment entries in JBoss (but outside of application's EAR)?

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This article confirms that (likely) it is not possible to configure environment entries in JBoss. Author suggests to use PropertiesService as alternative.

Property configuration in properties-service.xml works great!