It's possible to set a different scratchdir for each web application?

I know that the scratchdir parameter is set in the webdefault.xml under \deploy\jbossweb.sar as init parameter of servlet "jsp", but if a have more web application, how can i set different scratchdir ?
(in the jboss-web.xml file, i havent' found anything regards this one)


<servlet-name>jsp</servlet-name>
<servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
<init-param>
<param-name>scratchdir</param-name>
<param-value>c:/jbosstemp</param-value>
</init-param>
<load-on-startup>0</load-on-startup>


thank you