Log4j is identifying ${java.home} but not ${catalina.home} or ${jboss.home}

Question

my Env Variables and Path:
JAVA_HOME
D:\MQS\jdk1.5.0_03
CATALINA_HOME
D:\MQS\Servers\Tomcat 5.0
path : %JAVA_HOME%\bin;%CATALINA_HOME%\bin;
When i run my class it is creating debug.log in JDK but it failing to create a log file folder in Tomcat.. why ? any idea....!!
my log4j.xml is as below:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd" >
<log4j:configuration>
<appender name="debugfile"
          class="org.apache.log4j.RollingFileAppender">
          <param name="maxFileSize" value="100KB" />
          <param name="maxBackupIndex" value="5" />
          <param name="File" value="${catalina.home}/MQLOG'S/debug/debug.log" />
          <param name = "File" value="${java.home}/MQLOG'S/Debug/debug.log"/>
          <layout class="org.apache.log4j.PatternLayout">
                   <param name="ConversionPattern"
                    value="%d{ABSOLUTE} %10p %c{10}:%L - %m%n" />
          </layout>
          <filter class="org.apache.log4j.varia.LevelRangeFilter">
               <param name="LevelMin" value="debug" />
               <param name="LevelMax" value="debug" />
          </filter>
     </appender>
                <root>
          <priority value="debug"></priority>
     </root>
</log4j:configuration>ThankQ,
Han.

Answer 1

hello DrClap,
ThanQ very much for reply.
I have tried what ever you said. As in my other therad you said to give the runtime variable path like
<param name="File" value="D:\MQS\jboss As\Tomcat 5.0/Dbg/debug.log" /> In that case it has created a folder "MQSjboss AsTomcat 5.0".
My Question is When it is identifying ${java.home} in the same way why it is not identifying ${catalina.home} or ${jboss.home}.
As what i understood is ${java.home} or ${catalina.home} or ${jboss.home} are variables which have some predefined path or property.
thankQ.