Mouse Wheel Event is not triggered when I scroll using Robot API - mouseWheel(int wheelAmt)

When I scroll manually its triggering events.

Compile and Run MouseWheelTest.java
A Frame with a List will appear. Robot will move over the list and will scroll.
If no messages is printed on the console, ie. even not triggered, bug is reproduced.

I have tested in Linux RedHat 6.2 and 7.0

Mouse Wheel is configured in our Lab Machines as per instructions given by Brent Christian. Its working fine for all Manual scrolling operations. Fails only when we use Robot mouseWheel(int wheelAmt) API

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al.smith@eng 2001-05-29
Name: as83306 Date: 05/09/2001

Regression test java/awt/Robot/RobotWheelTest/RobotWheelTest.html fails with Merlin build 63 on Linux 6.2,
host seahund. This test has not passed within the last 9 builds when it was introduced in build 54.
 For test hardware config's, see http://sqesvr.eng/st3/jdk1.4/docs/Merlin-hw.html
 
 #Test Results (version 2)
#Thu May 03 10:15:24 GMT+00:00 2001
#checksum:3ae1e29789ed059b
#-----testdescription-----
$file=/.automount/sqesvr/root/export/st1/regression/merlin/jdk1.4Tests/tests/b63/java/awt/Robot/RobotWheelTest/RobotWheelTest.html
$root=/.automount/sqesvr/root/export/st1/regression/merlin/jdk1.4Tests/tests/b63
author=bchristi: area=Robot
keywords=bug4373478
run=USER_SPECIFIED applet RobotWheelTest.html\n
source=RobotWheelTest.html
title=Test mouse wheel functionality of Robot

#-----environment-----

#-----testresult-----
description=file:///.automount/sqesvr/root/export/st1/regression/merlin/jdk1.4Tests/tests/b63/java/awt/Robot/RobotWheelTest/RobotWhe
elTest.html
end=Thu May 03 10:15:24 GMT+00:00 2001
environment=regtest
execStatus=Failed. Execution failed: Applet thread threw exception: RobotWheelTest$TestFailsException: Test ran, but failed!
javatestOS=Linux 2.2.14-6.1.1 (i386)
javatestVersion=JT_2.1.3i
script=com.sun.javatest.regtest.RegressionScript
sections=script_messages build compile applet
start=Thu May 03 10:14:50 GMT+00:00 2001
status=Failed. Execution failed: Applet thread threw exception: RobotWheelTest$TestFailsException: Test ran, but failed!
test=java/awt/Robot/RobotWheelTest/RobotWheelTest.html
work=/export0/results/regression/merlin/b63/seahund.2.2.14-6.1.1-jth13-jdk14b63-05.03-09.14-ALL/java/awt/Robot/RobotWheelTest

#section:script_messages
----------messages:(1/102)----------
JDK under test: java full version "1.4.0-beta-b63" (/net/sqesvr/export/st1/jdk14-beta/b63/linux-i386)

#section:build
----------messages:(3/100)----------
command: build RobotWheelTest
reason: Named class compiled on demand
elapsed time (seconds): 3.002
result: Passed. Compilation successful

#section:compile
----------messages:(3/223)----------
command: compile
/.automount/sqesvr/root/export/st1/regression/merlin/jdk1.4Tests/tests/b63/java/awt/Robot/RobotWheelTest/RobotWheelTest.java
reason: .class file out of date or does not exist
elapsed time (seconds): 2.998
----------System.out:(0/0)----------
----------System.err:(0/0)----------
result: Passed. Compilation successful

#section:applet
----------messages:(3/130)----------
command: applet RobotWheelTest.html
reason: User specified action: run applet RobotWheelTest.html
elapsed time (seconds): 31.805
----------System.out:(0/0)----------
----------System.err:(25/2415)----------
RobotWheelTest$TestFailsException: Test ran, but failed!
at RobotWheelTest.start(RobotWheelTest.java:115)
at com.sun.javatest.regtest.AppletWrapper$AppletThread.run(AppletWrapper.java:145)
at java.lang.Thread.run(Thread.java:579)
STATUS:Failed.Applet thread threw exception: RobotWheelTest$TestFailsException: Test ran, but failed!
result: Failed. Execution failed: Applet thread threw exception: RobotWheelTest$TestFailsException: Test ran, but failed!


test result: Failed. Execution failed: Applet thread threw exception: RobotWheelTest$TestFailsException: Test ran, but failed!