problem with update ExitStatus

Hello, everyone

I have problem with update EXIT_MESSAGE column in batch_step_execution table.

My situation : 1. I have reader which read FlatFileItemReader in my job configuration
2. When I use jobLauncher to run my job. Spring batch will throw exception because
Input resource does not exists.
3. In afterStep method I create ExitStatus with EXIT_CODE='FAILED'
and EXIT_MESSAGE='exception id which i create'
4. I return ExitStatus.
In my situation spring batch update "FAILED" to EXIT_CODE column but not update "exception id" to
EXIT_MESSAGE column. Can anyone help me?

Example :
- read Flat File
<bean id="readAuditData" class="org.springframework.batch.item.file.FlatFil eItemReader"
<property name="resource" value="file:D:\ATM20120717.txt" /> -- this line cause spring batch error
<property name="strict" value="true" />
.....
</bean>

- in afterStep method
@Override
public ExitStatus afterStep(StepExecution stepExecution)
{
ExitStatus exitstatus = new ExitStatus(stepExecution.getExitStatus().getExitCo de());
String exceptionId = getExceptionId( stepExecution.getFailureExceptions() );
exitstatus.addExitDescription( exceptionId );
return exitstatus
// After return exitstatus, EXIT_MESSAGE column not update. why?
}
I use spring batch 2.1.8.
Please ask me If you don't understand my question because english language is not my first language.

Thank you