How Does Xp_cmdshell Decide Success Vs. Failure?

Hi all,

I have a stored proc that uses xp_cmdshell to boot off a batch file on the NT side of the box (box OS is Windows 2000 Advanced Server).

Here is the pertinent code:/*----- Kick off the NT bat job to suck over the data through the web service pipe*/
SELECT @NTCommand = 'D:TradeAnalysisWondaDataStoreJobsPullFromWONDA _InstitutionalRankings.bat ' + CONVERT(varchar(10), @ReqDate, 101)
EXECUTE @e_error = master.dbo.xp_cmdshell @NTCommand
SELECT @m_error = CASE WHEN ISNULL(@e_error, 0) <> 0 THEN (@e_error + 50000) ELSE @@Error END
IF @m_error <> 0 GOTO ErrorHandlerThe trouble is that the batch file is failing (soft error, caught internally to the batch file, which then kills itself, screaming loudly all the way).

The batch file is using the following "voice" in which to scream in pain as it dies (a.k.a., using this code to terminate itself, which kills the cmd shell and returns 13 as an error code)REM WonDBService.exe says we failed
Date /T
Time /T
EXIT /B 13

Meanwhile, back at the ranch (errr...back in stored procedure), what is being returned is a ZERO (in the first code block, @e_error is being set to ZERO when the xp_cmdshell returns from the bat file.

So, now that I have ruled out the obvious *LOL* how can I get my xp_cmdshell to realize it has failed miserably at the one, tiny, simple, not-too-much-to-ask, job that it is designed to do?